Answer:
They are the most effective way of inserting medicine.
If they weren't needles, they would definitely be used more.
Explanation:
Many times vaccines need to be administrated into muscles and strong tissue, so they need a needle to get all the way through. Other ways of giving vaccines are proved to be less potent and do not work as well.
Research also shows that 24% of parents fear needles and 63% of children fear needles.
B, weakens the immune system
Since they are listed per serving you can limit your portion sizes and a con is that to know how many nutrients are in your food you would have to add it all up yourself.
The answer is disabled or disability but I would go with disabled that would make the most sense.
