Briefly discuss the relative costs and benefits of having a modular growth strategy for each resource in Q4a-c. Resources are given for a and b, but you will have to name one for 4c.

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.

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what are the options

Yes yes yes very good

Stimulates weight gain, so you put on excess weight