Given

Part A (factor)
The numbers or variables that are multiplied to form a term are called its factors.

Part B (Terms)
A term can be a number, a variable, a product of two or more variables or product of a number and a variable. An algebraic expression is formed by a single term or by a group of terms.
The terms are
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Part C (Coefficient)
A coefficient is an integer that is written along with a variable or it is multiplied by the variable

Part D (constant)
A constant is a numerical value that should not change its value

Part E (operation)
Operation is addition , Susbtraction, multiplication,