I’d say A. noun clause since it’s the subject of the sentence and is describing a singular person (noun)
Top left: Associative property of multiplication.
Middle left: Associative property of addition.
Bottom left: Identity property of multiplication.
Top right: Communtative property of addition.
Middle right: Commutative property of multiplication.
Bottom right: Identity property of addition.
Answer:
a timeline describing events in chronological order
Explanation: