To wear a sanitary pad, remove the back and place it inside the undergarment. It should sit on the middle.
For women it is for privacy, I mean we all probobally know about skirts flying up in the wind or nosy posy men, so for lady's safety wear underwear. For men it is because men need to be sanitary, and so they wear underwear to keep other parts of there body clean.
Use sanitary wear, like Sanitary Towels, Tampons for example
No, you don't have to wear a pantiliner - pantiliners are designed for light menstrual flow, but some women will go without protection when flow is this light, use period underwear, sanitary pads, softcups, or menstrual cups.
For obvious sanitary reasons.
wall hangings carpets bags dresses clothing warmth protection
Yes, it is best for men to cover their private parts when having an x-ray.
provide the necessary privacy and protection from the sun
Nothing stopping her but she, and them, should always wear protection.
provide the necessary privacy and protection from the sun
Many men like to wear after shave as it is useful in preventing cuts or infections. Cutting oneself during the shaving process is common, so protection in the form of after shave is often used.
Wear a sanitary napkin/tampon.