In the following question, a word or phrase has been highlighted in the sentence. Choose the option that can best replace the highlighted word or phrase to make the sentence both grammatically and contextually correct. If no replacement is required, select “No replacement required” as the answer.

She tried to mask her embarrassment after making the mistake.

Correct option is C

The correct answer is C: hide her discomfort.

Breakdown:

• Original Phrase: "mask her embarrassment"
• Meaning: The verb "mask" means to conceal or cover up, while "embarrassment" refers to a state of emotional discomfort or awkwardness resulting from a mistake.
• Why Option C is required here: Unlike standard "No replacement required" questions where the original phrase is retained when correct, this specific question is a phrase replacement/synonym-based substitution drill where option E provides a completely different, contextually irrelevant phrase ("conceal her identity").

Because "No replacement required" is not an available choice in this specific option set, Option C ("hide her discomfort") is the only alternative that accurately preserves the original meaning (mask hide, embarrassment discomfort).

Evaluation of Other Options:

• A (explain her action): Changes the meaning from concealing an emotion to providing a rationale.
• B (reveal her shame): Means the exact opposite of "masking" (exposing vs. concealing).
• D (increase her confidence): Illogical in the context of making a mistake.
• E (conceal her identity): Irrelevant contextually (she is hiding an emotion, not who she is).