Given:
There are given the statement, " How do you know when an expression is in its simplest form?".
Step-by-step explanation:
According to the concept:
The simplest form of the expression is:
There are no like terms.
There are no parentheses.
All fractions should be a simple and common factor.
The quotient comes out.
Final answer:
Hence, the correct options are A, B, C, and D.