Explanation
The correct answer is B: "A man of no substance".
The proverb "a man of straw" is an idiom that means a person who is weak, worthless, or lacks substance. The idiom is derived from the practice of stuffing scarecrows with straw, which has no real value or substance.
Option A: "A very active person" does not convey the meaning of the proverb, as the proverb is not related to the level of activity of a person.
Option B: "A man of no substance" is the correct meaning of the proverb and indicates that the person being described has no real value or worth.
Option C: "An ugly person" is not related to the meaning of the proverb, as it does not refer to a person's physical appearance.
Option D: "An unreasonable person" is also not related to the meaning of the proverb, as it does not refer to a person's behavior or actions.
Therefore, the correct answer is B: "A man of no substance".
