Which evidence in this selection best supports the theory that people migrated across the Atlantic Ocean thousands of years ago?
A. Heyerdahl made a raft of balsa wood found in South America.
B. The Ra was based on a design from a drawing found in Egypt.
C. Heyerdahl made a boat of reeds, but it broke apart.
D. Ancient pyramids have been found in both Mexico and Egypt.

Read the quote from zimmermann in the code book. a future government could inherit a technology infrastructure that's optimized for surveillance, where they can watch the movements of their political opposition, every financial transaction, every communication, every bit of e-mail, every phone call. everything could be filtered and scanned and automatically recognized by voice recognition technology and transcribed. it's time for cryptography to step out of the shadows of spies and the military, and step into the sunshine and be embraced by the rest of us. which question does this paragraph answer? why does zimmermann think encryption is important? what kind of encryption did zimmermann invent? how does zimmermann’s encryption work? who made encryption based on zimmermann’s work?