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.
