Plz help What is undefined?

undefined is when it can't be defined. it can't have a valid answer.

Undefined

Mathematics

In mathematics, the term undefined is often used to refer to an expression which is not assigned an interpretation or a value. The term can take on several different meanings depending on the context. For example: In various branches of mathematics, certain concepts are introduced as primitive notions.

There you go bro.

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.

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