Respuesta :
Hey there
Correct answer is C. Let's see why.
A: Statement a could not work because there is no a position on this topic, just a believing and it is not related to a position.
B: OK, it says that parents have a lot to be concerned about, but this is a generalization and there is not a positive or a negative opinion.
C: This one would work. It is the only one in which we have a reference and a clear opinion. Since the beggining, we see a biased phrase: without a boubt. By saying that and adding that parents SHOULD take THE TIME, it's taking a position: I agree with vaccination; therefore, I take some time to vaccinate my kid
D) Children's health must be con: Ok, it's about health and safety; however, this statement is not limiting how to to look after children. It had to be so specific; say that it was about vaccination and its position would be very explicit.
Hope this helps.