I was the the beach yesterday ; somehow it was a rather quiet day at the beach ( for a Saturday ) . I was sitting on a beach towel enjoying the breeze and staring at the ocean , one of my favourite past times . At one point I took of my sunglasses and looked out . The sun was much too bright and I had to put them back on immediately .

Q with options: Give answer the following question using evidence from the above passage: Why would they be worried about staring directly at the sun ?
Choose from:
a). Because doing so at the beach is considered rude .;
b). Because they had been told to always wear sunglasses at the beach .;
c). Because doing so can cause permanent eye damage .;
d). None of the above choices .;
c).