I believe your answer would be D.
Answer:
Primary consumers
They eat the majority of prey
Answer:
phylum Annelida and and leeches
Explanation:
The hypothesis would be: Consumption of a single apple every day will reduce the number of visits to the doctor.
The hypothesis is a proposed explanation that is a starting point for further investigations. So, in this case, we assume that eating one apple a day will keep us healthy, without the need for the doctor.