Does Palmer explain how the United States government got the information it used to pursue suspected "subversives"?

The correct answer to this open question is the following.

Although there are no options attached, we can say the following.

Does Palmer explain how the United States government got the information it used to pursue suspected "subversives"?

No, he did not explain how the US government got the information.

What Attorney General Palmer did was explain his actions of 1920 in a document titled "The Case Against the Reds."

In that document, Palmer informed that there were thousands of alien people in the United States territory that were spreading Communist and anarchist ideas supported by Soviet Union's leaders. He added that the method they used to discover this information was classified. So being confidential, that information couldn't be disclosed.

the answer is a) the proclamation of 1763.

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.