What was the reasoning scheme behind the following sentence: All prokaryotes lack a well-defined nucleus. The newly discovered cell has no well-defined nucleus. Therefore, the newly discovered cell is a prokaryote. a) Deductive Reasoning b) Inductive Reasoning c) Conditional Reasoning d) Analogical Reasoning.

The answer is letter a, Deductive Reasoning.

Explanation:

Reasoning - this is the act of thinking about something in a logical and sensible way. There are many types of reasoning but we'll focus on deductive reasoning.

Premise - a statement in an argument that provides reason or support for the conclusion.

Conclusion - a judgment or decision reached by reasoning.

Deductive Reasoning - this is also known as "deductive logic." This is the process of reasoning from one or more statements in order to reach a conclusion. It moves from generalized principles that are known to be true to a true and specific conclusion.

In the example above, the generalized principle is "All prokaryotes lack a well-defined nucleus." The premise is "The newly discovered cell has no well-defined nucleus." The conclusion is " Therefore, the newly discovered cell is a prokaryote."

Thus, the example above follows the deductive reasoning pattern.