Photosynthesis and its subtopics
First question:

B. The net gain of ATP in Photosynthesis is 0, so it cannot be A. C &amp; D are obviously not true.

Second question:
B. D is not true, C is not true (it is actually the opposite- Chloroplasts absorb all BUT green, so only green would be bad). Like another commentator said, the level of CO2 only aids the rate to a point, at which the rise is not great. 
http://www.rsc.org/learn-chemistry/content/filerepository/CMP/00/001/068/Rate%20of%20photosynthesis%20limiting%20factors.pdf