Answer:
C. Shrubby, fast-growing plants will sprout first, then pines will begin to grow over them and oaks will start growing in the shade below the pines.
Step-by-step explanation:
Shrubby plants are fast growing plants which completes its life cycle i. e. vegetative and reproductive phase of the plant while on the other hand pine tree is slow growing plant specie which takes more time in order to complete its life cycle as compared to shrubby plants. So the shrubby plants grow first but length of the pine is large than shrubby plant so that's why shrubby plants remain in the shade of pine tree.