Which type of main-sequence star(s) is a good candidate for ...

[haleyc112]

Which type of main-sequence star(s) is a good candidate for searching Earth-like planets with life?
 
  a. O and B
 b. G and K
 c. A and F
 d. white dwarfs
  e. binary stars

Question 2

What prevents Titan from being a candidate for supporting an evolution of life?
 
  a. It is too far from the Sun.
 b. Its atmosphere doesn't contain the right mixture of elements.
  c. Its surface is covered in methane lakes.
 d. Its surface temperature is too cold.
 e. It is tidally locked to Saturn rather than the Sun.

[sylvia]

Answer to Question 1

b

Answer to Question 2

d