During transformation, a. a prokaryote is changed into a eukaryote.
b. a cell takes in DNA from outside the cell.
c. foreign RNA is inserted into a plasmid.
d. a clone is produced.

b. a cell takes in DNA from outside the cell.

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.