Which of the following lines of evidence does NOT confirm that LTP is a physical basis for memory? a. Rats given a drug that blocked LTP learned a maze with few mistakes.
b. Drugs that mimic what happens during learning have been found to increase LTP.
c. Drugs that block LTP have been found to interfere with learning.
d. Rats given a drug that enhanced LTP learned a maze with half the usual number of mistakes.

B) Drugs that mimic what happens during learning have been found to increase LTP. ... D) Rats given a drug that blocked LTP learned a maze with few mistakes

Explanation:

in the quotation from passage, connie willis states that literature is a way for authors from the past to communicate with readers of today. we can read their stories, books, and other texts to learn lessons about life. willis refers to these lessons as messages “from beyond the grave.” willis has a favorable viewpoint about the timelessness of literature.