Use the sentence to answer the question.

Question

Sherman Poppen is credited with inventing the snowboard (though many before him, including children and adults, have claimed to slide seamlessly down a hill while standing on a single flat surface), which allowed for the sport to take hold during the 1970s and 1980s.
How does the writer vary syntax in the sentence?

(1 point)
Responses

by separating two dependent clauses with a comma
by separating two dependent clauses with a comma

by using a simple sentence structure
by using a simple sentence structure

by using a comma splice for emphasis
by using a comma splice for emphasis

by separating a related idea using parentheses

Answer 1

The writer varies syntax in the sentence by separating a related idea using parentheses.