For finding the distance to M31, Hubble relied upon: A) RR ...

[Chelseaamend]

For finding the distance to M31, Hubble relied upon:
 
  A) RR Lyrae stars in its globular clusters.
  B) type I supernova in its core.
  C) type II supernova in its spiral arms.
  D) Cepheid variables in its spiral arms.
  E) planetary nebulae near its core.

Question 2

What is the resolving power of the telescope?
 
  A) the ability to make distant objects appear closer
  B) the ability to collect a lot of light
  C) the ability to detect very faint objects
  D) the ability to distinguish adjacent objects in the sky
  E) the ability to separate light into its component colors

[Meganchabluk]

Answer to Question 1

D

Answer to Question 2

D

[Chelseaamend]

TYSM

[covalentbond]

Thanks for the timely response, appreciate it