1. What is the purpose of the usage of the phrase "One hundred years" in paragraphs 1 and 2?
A. To emphasize how long racism has still occurred for Negroes.
B. To exaggerate how much positive change has occurred in the past one hundred
years.
C. To point out how ineffective the Emancipation Proclamation is in our country.
D. To illustrate his frustration over how long it has taken him to have the right to
speak at the Lincoln Memorial.

One of the author’s purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted . . in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with . . enormous speed