Gina planted mustard seeds in three cups. She placed the first one on her window sill, the second one under a shaded tree, and the third in her dark basement and measures and records the heights of the plants each week for five weeks. Which question is Gina most likely trying to answer?
A) How much water do mustard plants need?
B) What is the best brand of mustard seed to buy?
C) What is the best type of soil for mustard plants?
D) What is the best amount of sunlight for mustard plants?