Which word means to make stronger or more convincing by evidence or reasoning?

• A. Release
• B. Region
• C. Reinforce
• D. Reluctant

Answer: (C)

The idea behind this item is how to describe strengthening a claim by backing it with evidence or reasoning. Reinforce fits because it means to make something stronger or more convincing by adding support, such as data, examples, or logical argument. In this sense, you reinforce a point by showing it has solid backing, which makes it more persuasive.

Release means to let something go free or publish it in some contexts, but it doesn’t convey adding support. Region refers to a geographic area, not the act of strengthening an argument. Reluctant describes a hesitating or unwilling attitude, which is unrelated to strengthening a claim.