Suppose a DNA triplet has the sequence 3'YATG-5'. Which of these three possible mutations of the triplet will stop translation? A. 3-ACG-5
B. 3-ATC-5
C. 3-ATT-5

The speed of  sound:   sound travels  at different speeds depending on what it istraveling through. of the three mediums (gas, liquid, and solid)  sound waves travel the slowest through  gases, faster  through  liquids, and fastest  through  solids.

C) reflection (i also looked up the other choices just to make sure)