The self-help movement
a. has flourished online and as bibliotherapy
b. has been described as a "massive, systemic, and yet largely silent revolution."
c. had its roots in such programs as Alcoholics Anonymous.
d. all of the above

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.

the chair is the committee member from the majority party who has the most seniority. in the south carolina senate, the chair is the committee member from the majority party who has the most committee seniority.

answer; /// the above statement is (true);