You are presented with the quiz "what can an atom be?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if a neutral atom loses an electron then an atom with a negative charge will be formed" and "if an atom loses an electron, it is then positive". So, what's the best answer to the question?

(A). Energy.
(B). energy
(C). microscopic
(D). dangerous
(E). small
(F). nucleus
(G). an object
(H). negative
The answer is:
(H).