Answer:
A) Passing laws to increase safety.
Step-by-step explanation:
A persuasive essay needs to focus on a topic that could attract the attention of the readers and at the same time must have enough content to persuade them. Therefore, the best topic that would be narrow and most persuasive is "passing laws to increase safety". There are several reasons for this, as it would incorporate a wide audience with their logos, pathos, and ethos as it is concerned with the safety of the riders and drivers both. Secondly, it is a current topic that would influence the readers to think reasonably. The other options seem less relevant as passing new laws would be too wide while bicycle helmets or improvement of bicycle safety with helmets would restrict the audience to mere bicycle riders which are very less these days. Thus, the first option A seems most appropriate.