Choice A rationale:

Avoiding douching is recommended to prevent bacterial vaginosis (BV) as douching can disrupt the natural vaginal flora and increase the risk of BV.

Choice B rationale:

Using condoms or other barrier methods during sexual intercourse helps reduce the risk of BV transmission, as it prevents the introduction of potentially harmful bacteria into the vagina.

Choice C rationale:

Limiting sexual partners can lower the risk of BV, as having multiple sexual partners may increase the likelihood of exposure to different bacteria that can disrupt the vaginal flora.

Choice D rationale:

Treating underlying conditions, such as diabetes mellitus, is important because uncontrolled diabetes can create an environment conducive to BV development due to elevated glucose levels.

Choice E rationale:

Using hormonal therapy as prescribed is not directly related to preventing BV. Hormonal therapy typically pertains to conditions like hormone replacement therapy and is not a preventive measure for BV.