What is the difference between a formal and informal proof? (Please give explanations)

A) A formal proof uses a table or a list of steps, whereas an informal proof uses paragraphs.

B) A formal proof provides the reasons for steps, whereas an informal proof does not.

C) A formal proof is much shorter, whereas an informal proof is longer.

D) A formal proof uses equations, whereas an informal proof only uses text.

formaland informal proof in arithmetics is that a formal proof usesequations, whereas aninformal proofonly uses text. That isoption D.## What is formal and informal proof?

formal proofis defined as the concept used in arithmetics to show that the final answer to an expression obeys a particular rule of an equation or formula.informal proofis defined as the concept that shows the answer to a mathematical expression without the use of formula or derived equation.formalandinformal proofis that a formal proof uses equations, whereas an informal proof only uses text.formulahere: