beginning with an "is" and deducing an "ought" is known as which of the following?

A false dilemma
B the genetic fallacy
C the naturalistic
D the subjectivist fallacy

To determine the answer to this question, we need to understand the concepts mentioned and their relationships. Let's break it down:

1. "Is" refers to a statement or proposition that describes how things are, typically based on facts or observations.
2. "Ought" refers to a statement or proposition that describes how things should be or what actions one should take.
3. The term "deducing" suggests a logical or causal relationship between the "is" and the "ought" statements.

Now, let's consider the options:

A. A false dilemma is a logical fallacy that presents only two options when there may be more possibilities. This answer choice does not directly relate to deducing an "ought" from an "is."

B. The genetic fallacy is a logical fallacy that involves judging the validity of an idea based on its origin or history. This answer choice does not directly address deducing an "ought" from an "is."

C. Naturalistic fallacy is the incorrect inference of moral judgments from natural facts or properties. This occurs when someone argues that what is natural or observed in the world determines what ought to be. While this choice is related to deducing an "ought" from an "is," it does not accurately describe the specific situation mentioned in the question.

D. The subjectivist fallacy refers to a mistake in reasoning when someone concludes that personal beliefs or feelings determine objective moral truths. This fallacy also does not directly address deducing an "ought" from an "is."

Based on the given options and the given question, it is evident that none of the provided choices accurately describe deducing an "ought" from an "is." Therefore, none of the options presented are the correct answer to this question.