Elongated hyphens would make this sentence grammatically correct: gideon and francis took a difficult but not interesting science course.

which sentence demonstrates the correct use of elongated hyphens? (4 points)

gideon - and - francis took a difficult but not interesting science course.
gideon and francis took a difficult but not - interesting science - course.
gideon and francis took a difficult - but not interesting - science course.
gideon and francis - took a difficult - but not interesting science course.

The sentence that demonstrates the correct use of elongated hyphens is "Gideon and Francis took a difficult - but not interesting - science course".

Explanation: Elongated hyphens are added in a sentence to emphasize a particular idea. Therefore, they have the opposite effect of parenthesis, which minimize the information provided. Moreover, elongated hyphens give place to abrupt interruptions. The sentence "Gideon and Francis took a difficult - but not interesting - science course" is the one that uses the elongated hyphens in a correct way because what the writer wants to emphasize is the fact that the science course was not interesting.

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