Sound waves in the early universe traveled faster than half of the speed of light. (True or false?)

Sound waves in the early universe traveled faster than half of the speed of light.
 
  Indicate whether the statement is true or false

Question 2

Which of the following best describes the development of astronomical telescopes over the past 60 years?
 
  A) Over the 60-year period, telescopes have gradually gotten bigger and more powerful.
  B) Although there have been advances in cameras and computing power, telescopes themselves have not changed much in the last 60 years.
  C) The world's most powerful telescope remained the same for most of this period, but in the past 20 years many new and more powerful telescopes have been built.
  D) The only major change in telescope power has occurred because of our ability to launch telescopes into space rather than operating them only from the ground.

Question 3

Does it make sense that there are such noticeable differences in the jovian planets? Why or why not?
 
  What will be an ideal response?