How does the proton gradient in the mitochondrial intermembrane space relate to ATP production?

Question $53$Select one:

a$.$

$$A stronger gradient leads to less ATP production.$$

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b$.$

A weaker gradient leads to more ATP production.$$

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c$.$

$$A stronger gradient leads to more ATP production.$$

cross out

d$.$

A weaker gradient leads to less ATP production.$$

cross out

e$.$

The gradient does not affect ATP production.