Concept:
Passive voice in present perfect tense uses:
\[
{has/have + been + past participle}
\]
Step 1: Identify tense.
\[
{“has answered”} \Rightarrow {present perfect}
\]
Step 2: Convert to passive.
\[
{Object} \rightarrow {Subject} = {My question}
\]
\[
{has been answered}
\]
Step 3: Add negation.
\[
{Nobody} \Rightarrow {has not been answered}
\]
Step 4: Evaluate options.
- (A) \checkmark correct
- (B) $\times$ missing “been”
- (C) $\times$ wrong tense
- (D) $\times$ past perfect
Hence, the correct answer is option (A).