It is recommended that a person do strengthening activities at least twice a week to reduce and manage stress such as?

2 answers

A. Sit-ups and lifting weights
B. writing in a journal
C. Reading a book
D. All of the above

wouldn't the answer be d?
"strengthening" in this context means you are doing exercises that include a means of resistance.
http://www.google.com/search?q=resistance+exercises&oq=resistance+exercises&aqs=chrome..69i57.3943j0j7&sourceid=chrome&es_sm=122&ie=UTF-8

Reading and writing are sedentary! They exersise your mind, but is that what the course and this question are about?