The given sentence has an error. Choose the option that corrects the error.
Throw a rounder stone to create ripples in the water.

Correct option is D

The correct option that corrects the error is (d) "Throw a round stone to create ripples in the water."
Explanation: The phrase "rounder stone" is incorrect because "round" is an absolute adjective, meaning it doesn't typically take comparative or superlative forms.
Corrected sentence: "Throw a round stone to create ripples in the water."
Explanation: Some adjectives like "round," "perfect," "complete" do not take comparative or superlative forms because they represent an absolute state.