Ans.
Reproduction is defined as a process that involves formation of offspring (new organisms) from parent organisms. In higher organisms, including humans. reproduction occurs via sexual mode of reproduction.
Sexual reproduction has many advantages over asexual reproduction as sexual reproduction leads to formation of genetic variations in individuals. However, slow rate of reproduction is a main disadvantage of sexual reproduction as reproduction through asexual means is much faster than sexual reproduction.
Thus, the correct answer is option). 'sexual reproduction.'