An Environmentalist Will Be Including Many Scientific Concepts and Terms

Multiple Choice

An environmentalist will be including many scientific concepts and terms in his talk and wants to define them in different ways. He can use four types of definitions:

A) abstract, concrete, formal, and informal.
B) real, hypothetical, analytical, and concrete.
C) literal, figurative, logical, and narrative.
D) etymology, authority, negation, and specific examples.