Which Terrestrial planet has the largest moon or moons relative to the planet circled?

Which Terrestrial planet has the largest moon or moons relative to the planet circled?
 
  a. Mercury
  b. Venus
  c. Earth
  d. Mars

Question 2

As seen from Earth and the Hubble Space Telescope, Mars shows
 
  a. a reddish color.
  b. dark markings.
  c. rotation.
  d. white icy polar caps.
  e. All of the other choices are correct.

Question 3

Which one of the phrases below is the current explanation of why the surface of Venus is so hot?
 
  a. Venus's poor reflectivity
  b. the action of the greenhouse effect caused by carbon dioxide
  c. always keeping the same face turned toward the Sun
  d. the action of the greenhouse effect caused by hydrogen

Question 4

Which of the objects below has an atmosphere consisting mostly of carbon dioxide?
 
  a. Earth
  b. Mercury
  c. Earth's Moon
  d. Venus
  e. None of the other choices are correct.

Question 5

Which terrestrial planet has the highest-pressure (thickest) atmosphere?
 
  a. Mercury
  b. Venus
  c. Earth
  d. Mars

Question 6

The daytime surface temperature of Mercury is higher than Earth's Moon's surface temperature because
 
  a. clouds shield the Earth's Moon during the day.
  b. Mercury is farther from the Sun than the Earth's Moon.
  c. Mercury is closer to the Sun than the Earth's Moon.
  d. the atmosphere of the Earth's Moon has a strong greenhouse effect.

Question 7

Whether or not a planet like Mercury can hold a particular gas in its atmosphere depends on that planet's
 
  a. ice cap.
  b. craters.
  c. escape velocity.
  d. its distance from the Sun as manifested in the temperature of the atmosphere.
  e. escape velocity and its distance from the Sun as manifested in the temperature of the atmosphere.