Consider the Following Observation: Male Song Sparrows Sing More at Dawn

Multiple Choice

Consider the following observation: Male song sparrows sing more at dawn than during any other time the day.
With regard to this observation, the statement "Males that receive a 'care package' of extra food the day before should produce more songs during the dawn hour than those that do not receive supplemental food" is an example of

A) a causal question.
B) a prediction.
C) test evidence.
D) a hypothesis.