When writing a research paper, choose a research subject that is

a) not too broad or too narrow.
b) very broad.
c) only about personal experiences.
d) very narrow.

When writing a research paper, it is important to choose a research subject that is neither too broad nor too narrow. Option (a), "not too broad or too narrow," is the correct choice.

Here's why:

a) Not too broad or too narrow: The ideal research subject should strike a balance between being too broad, which can lack focus and result in a superficial treatment of the topic, and being too narrow, which may limit the availability of relevant sources and make it difficult to gather sufficient information for the paper. A topic that falls in the middle ground ensures that the research paper can be effectively developed, supported with evidence, and presented within the desired scope.

b) Very broad: Selecting a research subject that is very broad is not recommended as it can make it challenging to cover the topic comprehensively in the limited scope of a research paper. Additionally, excessive breadth can lead to a lack of depth and make it difficult to draw meaningful conclusions or insights from the research.

c) Only about personal experiences: Writing a research paper solely based on personal experiences is not advisable. Research papers require a scholarly approach that involves gathering and analyzing relevant academic literature, conducting empirical research, or examining existing literature to develop a theoretical framework. Relying solely on personal experiences may lack the necessary objectivity, depth, and credibility expected in academic research.

d) Very narrow: While a specific and narrowly-defined research subject can be appropriate for certain types of research, selecting a topic that is overly narrow can limit the availability of relevant literature and make it difficult to find enough information to support the research. It is essential to have an adequate amount of credible sources to draw upon and contribute meaningfully to existing knowledge.

Therefore, it is best to choose a research subject that is not too broad or too narrow, as it allows for a well-focused, manageable, and comprehensive study.

When writing a research paper, it is recommended to choose a research subject that is not too broad or too narrow.

a) Not too broad or too narrow: It is important to select a research topic that is specific enough to provide focus and depth, but not so broad that it becomes challenging to thoroughly explore and analyze. A broad topic may lack focus and make it difficult to delve into specific aspects, while a narrow topic may limit available sources and make it challenging to find relevant information.

b) Very broad: A research paper on a very broad topic may result in a lack of focus and depth of analysis. It could also be challenging to cover all aspects of a broad topic within the scope of the paper.

c) Only about personal experiences: Personal experiences are generally not appropriate as the sole basis for a research paper. Research papers should be based on scholarly sources, such as books, academic journals, and reliable websites, which provide evidence-based information.

d) Very narrow: While a narrow research topic may allow for a more focused and in-depth analysis, it is essential to ensure that adequate research material is available. If the topic is excessively narrow, finding relevant sources and conducting a comprehensive study may be difficult.

In summary, option a) is the most appropriate choice when selecting a research subject for a research paper - not too broad or too narrow.