Which of the following methods suggests a preference for sons over daughters around the world?

A) neglect of baby girls
B) sex-selective abortion
C) female infanticide
D) All of these answers are correct.

All of the given methods suggest a preference for sons over daughters around the world. Neglect of baby girls can occur through providing lesser medical care, nutrition, and education opportunities to them. Sex-selective abortion is a practice where fetuses are selectively aborted if they are female. Female infanticide is the deliberate killing of newborn girls. All of these practices are evidence of a widespread preference for sons over daughters, which is prevalent in many cultures around the world.