some research suggests that tyrannosaurus rex, although often ridiculed for its diminutive arms—may have…

some research suggests that tyrannosaurus rex, although often ridiculed for its diminutive arms—may have been able to lift a full 450 pounds with each appendage. choose 1 answer: a no change b arms, c arms; d arms
Answer
Brief Explanations:
The em - dash (—) is used to set off an interrupting or parenthetical element. A comma, semicolon, or just the word without punctuation would disrupt the flow or not properly set off the aside. The original use of the em - dash is correct.
Answer:
A. NO CHANGE