Which type of organism converts wastes and dead material into nutrients that can be used as plants?
a) carnivore
b) herbivore
c) decomposer
d) producer

The correct answer is option C.

Explanation:

Decomposer : It is defined as those organisms which break down the complex organic matter into simple organic compounds. During this process, these organisms release nutrients and minerals into the soil which are used by the plants.

Carnivore: Those living organisms who feed on the flesh of the other animals.Like: lion, tiger, etc.

Herbivore: Those living organisms who feed on plants .Like: deer , cow, etc.

Producers: These are those living organisms who are capable of producing their own food. The most common examples of producers are plants.