The answer is, "C", "Heat".
The correct answer is (b.) infiltration. Rainfall is to precipitation as groundwater is to infiltration. Precipitation is the release of the water from the cloud (evaporated water) in the form of rain and snow. Infiltration is a process in which the water from the ground enters the soil.
Pansies and Sunflowers = Dicots
Hydrangeas = Monocots
Sure how though?
you can do it through here