I’m not an expert on the field, but based off of process of elimination and what I do know, I’d say b.
In order to help prevent pathogenic contaminants in the food, it is always best to cover them when they are not going to be eaten, they should have a lid or covered with any material that could secure them and away from contaminants. It is also best to store them in the right storage place if they are not going to be eaten or there are left overs. In doing these things, this will help them avoid being exposed to pathogenic contaminants.
I believe the answer is: Rebecca, who lives in a town with inadequate medical facilities, needs to see a doctor regularly to monitor her diabetes.
Community action refers to the type of decision or activities that is carried out by the will of the majority people in a certain community. In the case above, the members of the community could create a community action to gather enough funding to help rebecca paying for her medical bills outside the Town.
