Question

Choose the correct sentence

Hiking tours are arranged by the Sierra Club P.O. Box 7959, San Francisco, CA 94120.
Hiking tours are arranged by the Sierra Club, P.O. Box 7959, San Francisco CA 94120.
Hiking tours are arranged by the Sierra Club, P.O. Box 7959, San Francisco, CA 94120.

Answer 1

I believe its the third option.

Answer 2

The correct answer is "Hiking tours are arranged by the Sierra Club, P.O. Box 7959, San Francisco, CA 94120."

Step-by-step explanation:

The proper way to write a location is to separate each element of the location by using a comma (,), avoiding any possible confusion. The third option is the one that is properly written, using a comma to separate "the Sierra Club" and "P.O. Box 7959" and other comma to separate "San Francisco" and "CA".