Question

Kelp plant have been known to grow up to _______. a. 1 foot per week b. 2 inches per day c. 10 inches per day d. 1 inch per hour

Answer 1

Kelp plants have been known to grow up to C. 10 inches per day. 
It really depends of how much sunlight they get, because these rays help kelp plants produce food and the necessary nutrients. With the help of sunlight, these plants can grow faster. 

Answer 2

Answer:

C. 10 inches per day

Explanation:

Kelp plants start by growing underwater then expand to the surface to obtain sunlight and continue expanding.