<p>Since the bicycle courier is self-employed, he <strong>neither</strong> wears a uniform <strong>nor</strong> reports to any supervisor.</p>
<p>The correct answer is <strong>(D) neither</strong>.</p>
<p>In this sentence, we are discussing two actions or conditions that do not apply to the bicycle courier. The word "neither" is used to indicate that both actions or conditions are false or not applicable. The word "nor" is used to connect the two negative actions or conditions.</p>
<p>The other options are not correct:</p>
<p>(A) "either" is used when we are talking about two possibilities or options. In this sentence, we are not presenting two options.</p>
<p>(B) "both" is used when we are talking about two actions or conditions that are true or applicable. In this sentence, we are talking about actions or conditions that are not true or applicable.</p>
<p>(C) "yet" is used to indicate something that is expected to happen in the future. In this sentence, we are not discussing something that will happen in the future.</p>