____________ galaxies contain a supermassive black hole at their ...

[washai]

____________ galaxies contain a supermassive black hole at their centers while active nuclei are present in ____________of galaxies
 
  a. Most; a few percent
  b. Most; the majority
  c. A small minority; a few percent
  d. A small minority; the majority

Question 2

Star clusters are important to our study of stars because
 
  a. all stars formed in star clusters.
  b. the Sun was once a member of a globular cluster.
  c. they give us a method to test the our theories and models of stellar evolution.
  d. they are the only objects that contain Cepheid variables.
  e. All of the other choices are correct.

[milbourne11]

Answer to Question 1

a

Answer to Question 2

c