Answer:
A. Puzzles are a lot of fun. They require patience and strategy; one strategy is to start with the edge pieces and then group pieces by color.
Explanation:
A properly breaks up the first two parts of the run on phrase. B and C do not, inserting a comma but the two independent clauses without anything to join them. D has an unnecessary comma after the first word, and a run-on sentence after the semicolon.
An adjectival phrase or adjective phrase consists of a group of words that describes a noun or a pronoun. In the given sentence, the adjective phrase is, option C. Those old. The noun it describes is, "Patio Chairs".
From what I see all of the names are not capitalized so all of them seem to have the capitalization error
