Fruits with seeds are formed in angiosperms as a result of:

The correct answer is Option (1) → Fertilization

Fertilization is the process where the sperm cell from the pollen fuses with the egg cell in the ovule, leading to the formation of a zygote, which eventually develops into an embryo. Following fertilization, the ovule develops into a seed, and the surrounding ovary matures into a fruit.

The other terms have different meanings:

• Pollination is the transfer of pollen from the anther to the stigma but does not directly lead to fruit formation unless fertilization occurs.
• Apomixis is a form of asexual reproduction where seeds are produced without fertilization.
• Polyembryony refers to the development of multiple embryos from a single fertilized egg.

So, the correct answer is: Fertilization.