Final answer:
Mendel chose pea plants for his experiments because they are fast growing, easy to raise, and have visible characteristics that vary.
Step-by-step explanation:
Mendel selected pea plants for his experiments because they are fast growing and easy to raise. Additionally, pea plants have several visible characteristics that vary, such as seed form, flower color, pod form, and stem length. Each characteristic has two common traits, for example, seed form can be round or wrinkled, and flower color can be white or purple.