Read the excerpt from “Tools of the Spymaster."

James Jay's invisible ink did not become visible by heating. As he described it, his ink "would elude the generally known means of detection, and yet could be rendered visible by a suitable counterpart." Jay's invisible ink consisted of two chemicals. An agent used one chemical to write an invisible message. To read the message, the reader had to brush a second chemical on the paper; that chemical made the message visible. The two-bottle system, supplied by Jay, gave Washington the secure form of writing that he wanted.

Which statement best expresses the central idea of the excerpt?

James Jay was a spy for the Americans and had knowledge of chemistry.
James Jay’s invisible ink system allowed Washington to write secret messages.
James Jay believed secret messages that became visible because of heat were not secure.
James Jay’s system required two chemicals for writing and reading invisible ink messages.

James Jay’s system required two chemicals for writing and reading invisible ink messages.

Explanation:

The central idea of the excerpt is to explain the method James Jay used to write and read invisible ink messages.

The excerpt elaborately discussed how James Jay used a particular chemical to make his ink unreadable on paper and how the brushing of a second chemical on the paper made the ink visible again.

cavern

explanation:

for the crossword

the examples that saki used to represent satire through situational irony are options two (2) and five (5) inasmuch as the wolf thought that looking for a girl in the bushes could be as easy as hunting little pigs at the park, but it took him so much time to find the girl if it had not been not for a silly mistake. also, bertha would have survived to the wolf's hunt if she had not won those medals for goodness, which at the end they were what got her killed by making noise, so winning medals of goodness was not so good achievement, after all.