The Advantage of the Spongy Arrangement of Mesophyll Cells in the Lower

The advantage of the spongy arrangement of mesophyll cells in the lower leaf layer is that it allows for

A) maximum absorption of sunlight for photosynthesis.
B) maximum diffusion of CO₂ in the leaf.
C) maximum movement of water into leaf cells.
D) minimum water loss from the leaf.
E) minimum exchange of O₂ within the leaf.