The group, Percy, Grover, and Annabeth, travel west to go and meet Hades, although the god who has turned was actually Ares. Percy later finds Zeus' lightning bolt in a backpack given to him by Ares. He returns it to Zeus, as well as Hades' Helm of Darkness, which was also in the possession of Ares.
For some more informations, http://riordan.wikia.com/wiki/The_Lightning_Thief
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For me the answer is a because of the words too and cold, the cold is the adjective and the word too is the adverb. the word too described the word cold because it stated how cold troy was.
The index/glossary is what sorts contents in alphabetical order, as well as the page numbers.
Uhhhhhhhhhhhhhhhhhhhh... C???
