Answer:
It puts a complex experience in terms a reader can understand.
Explanation:
The given excerpt is taken from 'Born on a Blue Day' written by Daniel Tammet, chapter entitled 'Blue Nines and Red Words'.
The effect of comparing in the given excerpt is that it puts a complex experience in terms a reader can understand. The writer has put the complex words into simple words easily understandable to his reader.
Therefore, from the given options, the correct one is 'It puts a complex experience in terms a reader can understand.'