Austin and Marissa hypothesize that coneflower stomata use feedback loops to respond to moisture levels by opening when there is moisture present, and closing when there is no moisture present. Which BEST describes the setup they should use to support their hypothesis? A
Austin and Marissa should observe the number of closed stomata on one leaf, mist the leaf with water, wait one hour, and count the total number of stomata.

B
Austin and Marissa should observe the number of stomata on one leaf, mist the leaf with water, wait one hour, and count the number of stomata that have grown.

C
Austin and Marissa should observe the number of open stomata on one leaf, mist the leaf with water, wait one hour, and count the number of open stomata again.

D
Austin and Marissa should observe the number of stomata on one leaf, mist the leaf with water, wait one hour, and count the number of stomata that have disappeared.