Both Walnut and Ginkgo Trees Lose Their Leaves in the Fall

Multiple Choice

Both walnut and Ginkgo trees lose their leaves in the fall when day length starts decreasing.Based on these observations one may conclude that many tree species will lose their leaves in the fall in response to decreasing day length.This statement is an example of:

A) deductive reasoning
B) an experiment
C) inductive reasoning
D) a theory