I. Choose the best answer to fill in the blanks.

A. how (This asks about the function of an EEG cap)
B. although (This contrasts the development of language with the ability to communicate)
A. drawings (These are the first written types of communication mentioned)
A. to (This preposition indicates purpose)
A. form (This refers to the way communication was written)
B. saved (This describes what writing allowed people to do)
B. spoken (This refers to the languages that exist today)
C. over (This indicates the number of languages spoken)