What forms the basis of all life on the planet

Cells

Explanation:

Cells are the smallest and most basic unit of life. Thus, it is considered as the basis for all life since it involves the creation of organisms. For example, our own body consists of billions of cells.

Hope this helped :)

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.