Formation of fruit without fertilization is

The correct option is B Parthenocarpy
A) Apogamy- In this process, a haploid cell of female gametophyte (except egg cell) is responsible to form diploid embryo without fertilization.

B) Apospory- Formation of gametophyte directly from a sporophyte without meiosis is called apospory.

C) Syngenesis- It is a type of reproduction in which male and female take part. Male plant contributes spermatozoa and female plant contribute ovum thus the resultant embryo is derived from both the parents.

D) Parthenocarpy- Parthenocarpy is natural or artifical development of seedless fruit without ferilization of ovules. Eg: Pineapple, orange, cucumber.

So, the correct answer is 'Parthenocarpy'.