The correct answer is: a) Eye health and vision problems.
The YSR Kanti Velugu program is a government initiative in Andhra Pradesh, India, that aims to provide free eye care to all citizens of the state. The program includes screening for eye diseases, providing glasses and other corrective lenses, and conducting surgeries to correct vision problems. The program has been very successful, and has helped to improve the eye health of millions of people in Andhra Pradesh.
The other options are incorrect because they are not the focus of the YSR Kanti Velugu program. Option b) is about maternal and child health, which is a different issue that is addressed by other government programs. Option c) is about sanitation and hygiene, which is also a different issue that is addressed by other government programs. Option d) is about drinking water supply, which is also a different issue that is addressed by other government programs.