Answer:
the fixed amount of energy that a system described by quantum mechanics, such as a molecule, atom, electron, or nucleus, can have.
Explanation:
Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. Electrons are tiny, negatively charged particles in an atom that move around the positive nucleus at the center. Energy levels are a little like the steps of a staircase.
- Symbols - shapes -dimensions - math
The theme of this is the idea that all the actions which you do to try to determine the aesthetic of a poem is vain if you in any way feel the need to manipulate it or even try to interpret it -- it is its own being. It is a complex, incalculable demonstration of beauty.
I believe the correct answer is A because that's the sentence you would start off with when introducing someone to another.