Question

question 12 of 25
how is a for loop useful when working with arrays?

a. it adds values to the beginning or end of an array.

b. it changes an arrays value at a certain index.

c. it allows you to perform different actions on each item in an array.

d. it allows you to perform the same actions on each item in an array.

Explanation:

A for loop is used to iterate over an array. When iterating, the same action (like printing, modifying in a consistent way, etc.) can be applied to each element. Option A is incorrect as adding to array ends/beginnings is done by methods like push/unshift, not a for loop's main use. Option B is about direct index access/modification, not the loop's purpose. Option C is wrong because a for loop typically applies the same action, not different ones, to each item. Option D correctly describes the for loop's utility with arrays: performing the same action on each item.

Answer:

D. It allows you to perform the same actions on each item in an array.