Question - Data from Voyager II indicate that previous estimates of Triton's size were in error.

Data from Voyager II indicate that previous estimates of Triton's size were in error. It is now known that Neptune's largest moon is 

w) nearly the size of Mars 

x) half the size of Mercury

 y) twice the size of the Earth's moon 

z) even larger than previously thought

ANSWER: X -- HALF THE SIZE OF MERCURY