Respuesta :
The answer is option D.
Cold, or common cold, is a viral infectious disease that is infected through the air mainly via close contact, and touching objects previously grabbed by infected people
and avoiding going into the school and keeping a distance from her family is the best option in order to prevent further spread of the disease.
The correct answer to the question is D. The question is which action is the best action to prevent the spread of her cold, so we are not necessarily considering the side effects of missing school. It is the only option that limits her human interaction which spreads the disease.