Question

which line from \lather and nothing else.\ best reveals internal conflict?
to cover my nervousness, i went on honing the razor.
he evidently took it for granted that i was on the side of the existing regime.
he looked younger, several years younger than when he had come in.
and it would be so easy to kill him. he deserves it. or does he? no!

Explanation:

Internal conflict refers to a character's mental or emotional struggle. The line "And it would be so easy to kill him. He deserves it. Or does he? No!" shows the barber's internal struggle about whether to kill the captain. He first thinks the captain deserves to die, then questions it ("Or does he?"), and finally decides against it ("No!"). This is a clear example of internal conflict.

Answer:

And it would be so easy to kill him. He deserves it. Or does he? No!