Their reasoning is sound, I must admit.”

Which of the following best defines the bold phrase?

(1 point)
Responses

It highlights the most important parts of the author's argument.
It highlights the most important parts of the author's argument.

It is based on evidence from different sources.
It is based on evidence from different sources.

It includes an explanation of the author's opinion.
It includes an explanation of the author's opinion.

It is thought out and convincing.

The phrase "Their reasoning is sound, I must admit" suggests that the person speaking or narrating is acknowledging the validity and persuasiveness of the reasoning presented by someone else. The phrase implies that the reasoning is well-thought-out, logical, and convincingly supports a particular argument or position. Therefore, the best definition of the bold phrase is "It is thought out and convincing."