Which type of tissue is most likely to facilitate gas exchange in plants?

Spongy mesophyll is the correct answer because it is specifically adapted for gas exchange in plants. This tissue is located within the interior of leaves and contains many air spaces that allow for the diffusion of gases such as carbon dioxide, oxygen, and water vapor. The arrangement of the spongy mesophyll, coupled with its large surface area, facilitates efficient gas exchange, which is crucial for photosynthesis and respiration.

On the other hand, dermal tissue serves primarily as a protective layer covering the plant, vascular tissue is responsible for the transport of water, nutrients, and sugars but is not directly involved in gas exchange, and ground tissue encompasses various functions, including storage and support, but again, does not have the specific adaptations for optimizing gas diffusion like spongy mesophyll does.