Your answer is C: He wants Rohan to concentrate on the race.
Letter a, "He wants to arrive on time." is a complete sentence because it makes up a full idea, as to when the rest do not.
The only difference is that an electronic resume should be save as a PDF.
<span>My worst problem is the inability to speak clearly in public. <em>This </em>is not true when I am with my family.</span> The pronoun reference "this" in the sentence is used incorrectly because it used to refer to the whole sentence before it. It implies that the antecedent is "<span>My worst problem is the inability to speak clearly in public."</span> However, the readers don't know which part of that statement "is not true when I am with my family". Is the problem not true? Is the inability to speak clearly in public not true? The antecedent is vague, and we can say that (3) there's no specific antecedent.