Greg would like to provide a more effective controlling idea for his paper. The sentence should be replace to effectively state the controlling idea is Designing an exciting roller-coaster ride involves imagination and creativity, but it also requires using science. The correct answer is B.
Greg would want to propose a more practical control concept for his paper. Sentence 8 should be altered to read as follows in order to properly explain the governing theme of this paper: "Imagine and inventiveness are both necessary for designing a fun roller coaster.
But it also ecessitates using science."
The ruling idea is the central thesis that a writer develops in a piece.
Usually, the controlling concept reflects a definite opinion or attitude regarding the topic of the composition. The controlling idea might be supported by the paragraphs of the text.
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