Question

1. something you should disregard

options: good advice, sound evidence, valid proof, idle speculation

1. most likely to be a receptive listener

options: acquaintance, best friend, stranger, enemy

1. a likely result of being heedless

options: get high grades, gain respect, forget something, win recognition

1. something that is often tacit

options: comment, praise, understanding, shouting

Explanation:

1. "Idle speculation" means unsubstantiated guesswork, which should be disregarded, unlike the credible options.
2. A best friend is typically the most willing and receptive to listen compared to acquaintances, strangers, or enemies.
3. "Heedless" means inattentive; forgetting something is a direct result of being unmindful, unlike positive outcomes.
4. "Tacit" means unspoken; understanding is often implied without being stated, unlike the verbal options.

Answer:

1. D. idle speculation
2. B. best friend
3. C. forget something
4. C. understanding