I WILL GIVE BRAINLIEST

choice A)

This is the same as writing 7d^2

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Explanation:

When we add a number to itself repeatedly, we can use multiplication to shorten things. For example: 3+3+3+3 = 5*3 = 15. We have five copies of '3' being added, which explains the 5 times 3.

Extending this idea leads us to shortening repeated multiplications into exponentiations. In the case of , we have two copies of 'd' being multiplied. We replace with which is the same as d^2. The ^ symbol means "exponent".

The exponent (2) tells us how many copies of the base (the term d) we multiply out.

Another example would be

So that's why

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step-by-step explanation: