Why is Vitamin C necessary for scurvy?

1. cure-you initially detect the conjunciton and which adds information in a positive way. additionally, you want to do a quick recognition of your sentence elements. you will find the [subject] and [verb] are in their correct place. option a is eliminated because we don't need another subject/verb combination. option d is tricky because it includes for, but it does not follow the sentence sequence - for the + noun. option d is eliminated. option b is in verb form and we already have one; even if you think it's a noun, it is in plurar and it doesn't go with the sentence. leaving option c as the correct option.