The correct option is A Seminal fluid
Seminal fluid, i.e., semen contain spermatozoa and is secreted by males. Seminal fluid contains many components apart from spermatozoa like proteolytic enzymes and other enzymes, fructose, ascorbic acid, prostaglandins, etc., and some substances promote the survival of spermatozoa.
On the other hand, vaginal fluid, uterine lining and fallopian tube are components of female reproductive system.
Therefore, the correct answer is option A.