Question: This year scientist found concrete evidence of existence of black holes by taking photograph of one. Unfortunately, the originator of black hole theory, Stephen Hawking, was never awarded a Nobel prize despite letting science advance in big leap because his theory could not be verified during his lifetime. On the other hand, scientist B has received Nobel prize because he has based his theory on the earlier theory of scientist A.  Given the paragraph above, please answer correctly the following question:   Which scientist might not have improved an earlier idea, scientist A or scientist B?
Answer: scientist A

Question: Two friends went to the doctor because they weren't feeling well. As it turns out Danny had a condition called hypercalcaemia, while Greg had hypocalcaemia.  Given the paragraph above, please answer correctly the following question:   Which friend didn't have an excessive intake of vitamin D?
Answer: Greg

Question: High lake had a lot of fresh and salt water mixing, therefore presented layers of stratified water.The water was poor in nutrients.Low lake had no such problems and it was a very abundant and prolific fishing spot.  Given the paragraph above, please answer correctly the following question:   Which lake had less benthos?
Answer: