Buying blue-coloured clothes for boys and pink-coloured clothes for girls promotes:

Correct option is A

Gender stereotyping
Buying blue for boys and pink for girls reinforces gender stereotypes, which are simplistic generalizations about gender attributes, differences, and roles. These stereotypes perpetuate the idea that certain characteristics, behaviors, or preferences are inherently linked to a person's biological sex. This practice doesn’t reflect genetic characteristics, which are biologically determined and unrelated to color preferences. Nor does it promote gender fluidity, which acknowledges a spectrum of gender identities beyond the binary. It certainly doesn't have any connection with sex selection, which involves choosing a child's sex before birth.