Step 1: Find the relevant statements:
The passage says: "brains and computers can both be organized so as to solve problems. The mode of communication is very similar in both the cases, so much so that computers can now be designed to generate artificial human speech and even, by accident, to produce sequences of words which human beings recognize as poetry."
Step 2: Test the options:
(A) Computers produce poetry only by accident, so a dissimilarity remains. (D) The computer generates artificial speech, not natural speaking. (C) Both can be organised to solve problems, but this is only a conditional statement, with no claim that the faculty itself is the same. (B) The mode of communication is stated outright to be very similar in both.
Step 3: Conclude:
The statement that most directly says the two are not dissimilar is the one about the mode of communication.
Final Answer:
The correct option is (B): methods of communication.