Answer:
A
Explanation:
In the paragraph. they talk about solid liquids and gasses, and they state that in option A.
72 hours = 3 days
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The given sentence above is an example of a compound sentence. A compound sentence consists of two independent clauses. An independent clause contains a subject and a verb that conveys a complete thought. The independent clauses in a sentence can be connected either by a comma and coordinating conjunction or with a semicolon. In the given sentence above, the independent clauses are linked with a comma and a coordinating conjunction "and".