Number of chromosomes present in spermatids are:

The correct answer is Option (3) → 23

In human spermatogenesis, the spermatogonia and primary spermatocytes are diploid, with 46 chromosomes. The first meiotic division halves the number. So each secondary spermatocyte has only 23 chromosomes. The second meiotic division separates the two chromatids of each chromosome. It does not reduce the number again, so each spermatid is haploid with 23 chromosomes. The sperm formed from a spermatid also has 23.

NCERT Extract:
Gametogenesis – “… A primary spermatocyte completes the first meiotic division (reduction division) leading to formation of two equal, haploid cells called secondary spermatocytes, which have only 23 chromosomes each. The secondary spermatocytes undergo the second meiotic division to produce four equal, haploid spermatids (Figure 2.5).”