Write the next sentence in the following story.

How to protect children from infectious diseases
Keep hands clean.
It is the most basic and effective way of maintaining a basic hygiene level. If your child is old enough to wash his/her hands on his/her own, then teach them the appropriate way of doing so.

Choose from:
a). At first, they will touch the products as short and dirty as possible. But in a little effort, children will learn " under clean clothes ,' you can remove any harmful oils from both hands.;
b). Wiping the hands down with a paper towel is preferred, especially between children. These wipes are generally white and have natural oils or may contain fish oils, which can be difficult to wash off.;
c). If not, you need to ensure you wash your child's hand frequently. Keeping your infant's hands clean at all times cuts down the chances of him/her developing an infection.;
d). In most states, the same techniques apply. Wash your hands after any meal, wash your bedding with hot water and soap, and always wash your hands after touching or handling any infants.;. The answer should be
c).