Data validation works for setting a reasonable range for .

c. Inputs

Explanation:

Multiple choice "a. Both inputs and formulas, b. Formulas, c. Inputs, d. All types of data"

Data validation works for setting a reasonable range for Inputs, as formula's will apply on input values only, but for data validation the input values should be under a given range.

oh my god you are going so many marks marks i don't want to give you answers sorry

answer when little or no data is available;