All viruses are constructed of A. DNA with protein wrapping called a capsid
B. RNA with protein wrapping called a capsid
C. Either DNA or RNA with a protein wrapping called a capsid
D. Either DNA or RNA however many do not have a capsid

I think the answer is c

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.