How are super-absorbent polymers useful in fuel filters? a. they add water to the fuel line to dilute gas. b. they stop excess oil from reaching the engine. c. they repel water to protect the filter from rusting. d. they remove harmful moisture before it reaches the engine.

d.They remove harmful moisture before it reaches the engine.

Explanation:

The important of this super absorbent polymers lays on the fact that they are necessary for lowering the humidity that goes into the engine, in order to prevent the engine and other important parts from rusting. The fuel filter by itself eliminates dangerous particles for the engine, while the polymers absorb humidity.

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