In which situation is it appropriate to write using informal language?

1. A cover letter for a job application
2. A postcard to a friend
3. A scientific research article
4. A legal document to present in court

2. A postcard to a friend

In the given options, the situation where it is appropriate to write using informal language is when you are writing a postcard to a friend (option 2).

To determine the appropriate language to use in different writing situations, you should consider the purpose, audience, and expectations of the specific type of communication. Here's a breakdown of each situation:

1. A cover letter for a job application: It is typically important to use formal language when writing a cover letter for a job application. This reflects professionalism and helps to create a good impression with potential employers.

2. A postcard to a friend: When writing a postcard to a friend, a more casual and informal tone is suitable. Since postcards are usually meant for sharing personal updates or casual messages, using familiar language is acceptable.

3. A scientific research article: Scientific research articles require a formal and academic writing style. The language should be clear, concise, and structured to present objective findings and analysis. Informal language is not appropriate for such writing because it can hinder the professionalism and credibility of the research.

4. A legal document to present in court: Legal documents need to be written in a precise and formal manner as they have legal implications. The language used in legal documents should be able to withstand legal scrutiny and be understood by all parties involved. Informal language is generally not appropriate for legal documents as it may lead to misinterpretation or confusion.

So, in summary, it is appropriate to use informal language in writing a postcard to a friend, while formal language is more suitable for a cover letter, a scientific research article, and a legal document to present in court.

The situation that is appropriate to write using informal language is 2. A postcard to a friend. Writing to a friend typically allows for a more relaxed and casual tone where informal language is acceptable. In other situations like a cover letter for a job application, a scientific research article, or a legal document to present in court, it is important to use more formal and professional language to convey your message appropriately.