What is the subject of this sentence

Santiago said, “a man can be destroyed but not defeated.” in essence he says that a. defeat is likely when you sail alone. b. man can face defeat so it is important to learn from your mistakes and be prepared. c. sharks can always defeat man unless man is well prepared. d. man can be hurt and even destroyed but still have the ability to control how it is viewed.

Which type of presentation aid is depicted in the image above? a. object/topic itself b. illustration c. chart d. technology

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