Answer: D
You have a problem deciding if the answer is B or D because they are saying much the same thing.
C is never going to be the answer: he will always remember the jungle just as you or I would remember our childhood. What we experience in childhood is the only experiences we are going to get from childhood. Reading about others will not do us much good.
A is not the answer although it is correct. Kaa and Shere Khan remain dangerous now as they were before. So A is not the answer you seek.
D is probably the answer you want. It is more general than B.
Surface currents in the ocean are driven by global wind systems that are fueled by energy from the sun. Patterns of surface currents are determined by wind direction, Coriolis forces from the Earth's rotation, and the position of landforms that interact with the currents.
Answer:
She walked into the glimmering water, he followed quickly behind.
Explanation:
This sentence is worded better. Like other adverbs of manner (slowly, thoughtfully, excitedly, etc.), quickly is most often placed before the main verb, especially if the verb has a direct object.