Question

what is one of the reasons why gregor mendel chose to study pea plants?
they exhibit only a single trait.
they produce flowers.
they grow very slowly.
they reproduce sexually.

Explanation:

Mendel needed organisms that could reproduce sexually to study trait inheritance. Pea plants reproduce sexually, allowing for cross - breeding and observation of trait combinations. Pea plants have multiple traits (not just one), many plants produce flowers (not a unique reason for Mendel's choice), and they do not grow very slowly (they have a relatively short generation time which was an advantage).

Answer:

They reproduce sexually.