B talks about the greenhouse getting hot (it can get hot underwater, too... but, still) and plants getting dried out.
D doesn't provide any real evidence as to why the plants can't be dried out. It just states an action.
C talks about any plant and how it is especially important to water underwater plants. Honestly, the only real difference is where the plants are to absorb the most energy from the Sun (underwater).
***I am not absolutely sure. This is an educated guess.***
Answer: “ To make sure crops are watered, The green houses are designed to cause water to condense into droplets then drip down the slides of the pods into the plants”
C. It has been said that there are other ways to solve the problem.
This is because it shows that the author has investigated other possible solutions and not just the one that they are writing about. All of the other answers just support the claim without mentioning anything else.
Answer: You are the right race, a royal priesthood, a pure nation, an free person, that you may announce that the excellencies helped you get out of the darkness and into the light
