Question

The bicycle is capable of such high speed that there is a strong temptation to ride so fast as to cause over exertion or excessive perspiration. On the other hand some people ride too slow, causing a zigzag and uncertain movement. While exercising reasonable caution, be a fearless rider.

–The Bicycle: Its Selection, Riding and Care,
L. F. Korns

Which is the best paraphrase of the text?

It can be easy to get tired and sweaty when riding a bike too fast. Riding a bike too slowly can also be problematic. Be a brave cyclist!
Give in, and ride fast. Be careful about zigzagging. Don’t worry when you ride a bike!
Riding fast can be exhausting, and riding slowly may cause traffic delays. Watch out!
The best way to ride a bicycle is at high speeds, but some like to ride extremely slowly. When you ride, you don’t need to look around.

Answer 1

"It can be easy to get tired and sweaty when riding a bike too fast. Riding a bike too slowly can also be problematic. Be a brave cyclist!"

This best matches the original: it notes overexertion/sweating from riding too fast, problems from riding too slowly, and advises being cautious yet fearless.