In a certain plant, long stems (l) are dominant and short stems (l) are recessive. a plant has one long-stem allele and one short-stem allele. which correctly states the phenotype of the plant?
a. long stems
b. ll
c. short stems
d. ll

The correct option is A.
The phenotype refers to the set of characteristics which an organism have and which can be seen physically. 
In the question given here, the observable characteristic of the plant is long stem, that is, the plant has long stem.

To persuade someone not to take a particular course of action

An