D.) Is the most sensible answer.
Explanation: I used the process of elimination to solve this. Groundwater recharge sounds too far off of the topic, snow melt is...well...melting snow, infiltration also has nothing to do with the subject, but surface runoff is the only one that makes sense, is on topic, and seems to have a meaning similar to the occurrences describes in your question.
It’s the second one. The energy retained should decrease from the bottom of the pyramid to the top.
( if that’s not right then it’s prob the first and second answer.)
