Dark Matter is matter that A) cannot be seen, felt, or ...

[ishan]

Dark Matter is matter that
 
  A) cannot be seen, felt, or measured.
  B) cannot be seen or felt, but can be measured through its gravitational effects.
  C) is Dark Energy's complement.
  D) is found within a black hole.

Question 2

According to dark matter theory, most of the mass of a spiral galaxy is found
 
  A) within the central supermassive black hole.
  B) within the luminescent spiral arms.
  C) outside of the luminescent spiral arms.
  D) in the form of dark energy.

[macmac]

Answer to Question 1

Answer: B

Answer to Question 2

Answer: C

[ishan]

Thank you!

[macmac]

Always glad to help...