Yusef wants to do a study on how students behave in school when there is a teacher and another adult in the classroom. how can yusef observe the behavior?
a. by asking the students if they prefer to have one or two adults in the classroom at a time
b. by first watching how students react when there is one adult in the classroom and then observing how they react when there are two
c. by interviewing teachers to find out if they prefer to have one or two adults in the classroom at a time
d. all of the above

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?

Respect for the environment means a: loving trees and animals b: not drinking out of streams c: making as little impact as possible on wilderness areas d: only using resources that are high in supply

Assuming that the character maydelle is a symbol what does she most plausibly represent