Final answer:
The subject of this question is related to demographics and social issues, specifically the connection between all-female feticide preference, infant mortality, and the skewed sex ratio in certain populations.
Step-by-step explanation:
The subject of this question is related to demographics and social issues. It explores the connection between all-female feticide preference, infant mortality, and the skewed sex ratio in certain populations. This topic falls under the category of Social Studies, specifically the subtopics of demography, gender studies, and cultural traditions.