The line There are several theories that attempt to understand ...

[piesebel]

The line There are several theories that attempt to understand why acupunc
  so effective. in paragraph 4 is a
 
  a. major supporting point
  b. minor supporting point

Question 2

Before acupuncturists insert needles for treatment, they usually
 
  a. warn their patients about the severe pain from the needles.
  b. check the patient's pulse for 28 different qualities.
  c. select wide needles that can be used again and again.
  d. twirl, rotate, and raise the needles before inserting them.

[SVictor]

Answer to Question 1

a

Answer to Question 2

b

[piesebel]

TYSM

[lindahyatt42]

Thanks for the timely response, appreciate it