Part a: which statement best expresses the central idea of the text?

a

after studying the abilities of mind controlling parasites, scientists suspect that parasites might be able to similarly affect humans.

b

while it has been confirmed that some parasites can control the actions of their hosts, how they can do so largely remains a mystery to scientists.

c

parasites can control the actions of their hosts by altering the chemistry of their brains, forcing them to the parasites and their young survive.

d

the ability for parasites to understand the minds of other organisms has disproven the notion that single-celled organisms are unintelligent.

More than a hundred million e-mails are sent around the world each day, and they are all vulnerable to interception. digital technology has aided communication, but it has also given rise to the possibility of those communications being monitored. according to zimmermann, cryptographers have a duty to encourage the use of encryption and thereby protect the privacy of the individual. —the code book, simon singh what is the purpose of the statistic in this passage? it shows how big the need is for protection. it explains that email is an effective form of communication. it gives new ways to monitor email traffic. it illustrates how popular email has become.