How are these organelles similar?
A.
They are both designed to create food for the cell.
B.
They both have an inner membrane and an outer membrane.
C.
They are both found in animal cells.
D.
all of these

Take a look at this dictionary entry. contest con • test (n.) kon-test [from anglo-french or latin] 1. a competition between rivals for a prize 2. a struggle for victory 3. a dispute; controversy (v.) kuhn-test 4. to fight for in a battle 5. to call into question