The correctly punctuated sentence from the given options is:
C: He maintained his self-imposed silence.
Explanation:
Here's a breakdown of the correct punctuation in each option:
A: His self-esteem was very low.
- This sentence is correctly punctuated. It uses proper capitalization, punctuation, and sentence structure.
B: I hate self-assembly furniture.
- This sentence is correctly punctuated. It uses proper capitalization, punctuation, and sentence structure.
C: He maintained his self-imposed silence.
- This sentence is correctly punctuated. It uses proper capitalization, punctuation, and sentence structure.
D: It was clearly a case of self-defence.
- This sentence is incorrectly punctuated. It should be "self-defense" instead of "self-defence" to follow standard American English spelling.
Therefore, the correct answer is option C:
He maintained his self-imposed silence.