Mendel selected Pisum sativum for hybridisation experiments because of:

The correct option is A Clear contrasting characters and short life span
Mendel selected Pisum sativum plant for hybridisation experiments due to having following characters:
1. Clear contrasting characters and shorter life span soon produce results.
2. Bisexual flowers facilitate cross pollination with desired traits.
3. The hybrids are fertile and can produce large number of seeds.