I believe it is the second option
Answer: In order for reflection to occur, the wave must “bounce off” an object
Explanation: For example if your looking in the mirror the waves are bouncing off the mirror to reflect your image
Theoretical Yield of H2SO3: 31.2 g
Percent Yield: 67.4%
Theoretical Yield of C2H6: 6.50
Percent Yield: 88.7%
Theoretical Yield of HF: 3.84
Percent Yield: 71.4%
The answer would be Meiosis