In low-resource settings, visual inspection with acetic acid (VIA) is used as a screening test for:

Correct option is C

VIA involves applying 3–5% acetic acid to the cervix; acetowhite areas suggest cervical precancer/cancer. It is a cost-effective screening method in developing countries.
Explanation of options: (a) ✘ Ovarian cancer requires ultrasound/CA-125, not VIA. (b) ✘ Endometrial cancer diagnosis is by biopsy, not VIA. (c) ✔ Correct; VIA is specifically used for cervical cancer screening. (d) ✘ Vulvar cancer is assessed by inspection/biopsy, not VIA.