Select the word opposite in meaning to the underlined word.

How is one expected to deal with a persistent salesmen who won't take no for an answer?

vacillating

The correct answer is Option (3) → vacillating

• Persistent (Adjective): Continuing firmly or obstinately in a course of action in spite of difficulty or opposition; determined; stubborn.

• Vacillating (Adjective): Tending to waver or be indecisive about something; lacking firmness or resolve.

A person who is persistent is firm and resolved, whereas a person who is vacillating is wavering and lacks resolution, making it the most appropriate antonym.

Why the Other Options Are Incorrect: 

• Tenacious and determined are synonyms of persistent.

• Unscrupulous means having or showing no moral principles; dishonest or unfair. This is unrelated to firmness or resolve.