Question

Which form of the modifier best completes the sentence?

Which of your three siblings laughs __________?
a. more loudly
b. louder
c. more louder
d. most loudly
D?

Answer 1

Answer: D. most loudly

Step-by-step explanation: Option D is the only one using the superlative form of the adverb loudly, which we need in order to refer to only one of the siblings. All the other options are comparative (and option c is a mistake, since more and the suffix -er are redundant).