Answer:
D - 1. Yo tengo el pelo castaño y soy baja. ¿Cómo <em><u>erres</u></em>? ¿<em><u>Erres</u></em> alta o baja, rubia o pelirroja?
C. - 2 Yo tengo dieciséis <em><u>anos</u></em> y usted tiene quince. Soy grande y usted es pequeña y bonita.
3. Me llamo Erica. Tengo quince años. Soy alta y bonita. Yo soy de Mexico.
4. Maribel, tú eres bonita y guapa. Tienes 28 años y eres de Lima, Perú.
Explanation:
I'm scratching my head here.....
As for A (needs capitalization) and B (needs accent), neither sentence 3 nor sentence 4 has such an error!!!!
While you <em><u>could</u></em> argue that 'Mexico' needs an accent mark, you certainly could add one (and not be wrong by doing so) though it is by no means wrong if you don't add one.
So, then that leaves sentence 4 needing some sort of capitalization which it most definitely does <em><u>not</u></em> need.
And, of course, the reverse of what I just said is equally true. Sentence 3 does <em><u>not</u></em> have a capitalization error, and sentence 4 already has the required accents: tú and Perú.