Question

a central idea in the code book is the concern that much of the worlds information is not secure. which lines from the passage best support this central idea? check all that apply

it could be that the laws of mathematics forbid the existence of a significant shortcut

only a small fraction of the information flowing around the world is securely encrypted

companies are already supplying shielding material that can be used to line the walls of a room

few of these people take adequate precautions in terms of privacy

law enforcers and anybody else with a curious mind can get their hands on more information

Explanation:

Analyze the central idea

The central idea we need to support is "the concern that much of the world's information is not secure." We must evaluate each option to see which lines directly demonstrate or provide evidence for this lack of security.

Evaluate the first three options

• "it could be that the laws of mathematics forbid the existence of a significant shortcut": This discusses mathematical limits of cryptography, not the current insecurity of global information.
• "only a small fraction of the information flowing around the world is securely encrypted": This directly supports the central idea. If only a small fraction of global data is encrypted, then the vast majority of the world's information is unencrypted and therefore not secure. This is a key piece of Evaluating Evidence for Central Idea Development.
• "companies are already supplying shielding material that can be used to line the walls of a room": This refers to physical security measures for specific rooms, which does not directly support the broad concern about global information insecurity.

Evaluate the remaining options

• "few of these people take adequate precautions in terms of privacy": This supports the idea that personal information is not secure because individuals fail to protect it. It directly highlights a vulnerability in information security.
• "law enforcers and anybody else with a curious mind can get their hands on more information": This directly shows how easily accessible and insecure information is, as almost anyone with curiosity or authority can access it. This serves as strong evidence of widespread insecurity.

Answer:

• it could be that the laws of mathematics forbid the existence of a significant shortcut
• only a small fraction of the information flowing around the world is securely encrypted (Correct answer)
• companies are already supplying shielding material that can be used to line the walls of a room
• few of these people take adequate precautions in terms of privacy (Correct answer)
• law enforcers and anybody else with a curious mind can get their hands on more information (Correct answer)