Question

Which sentence is punctuated correctly?

My cousin-an expert on the Tyrannosaurus-works as a paleontologist at the local university.
o I found in the ocean with its waves crashing into silently swaying kelp-a beauty unknown to me before.
Every day of the season from the opening day to the last call-is a roller coaster-of excitement and despair.
Happily-the crowds-waited in line for what they knew was going to be the best show of their lives.
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Answer 1

My cousin - an expert on the Tyrannosaurus - works as a paleontologist at the local university.