Best Online CAT Coaching

Let’s evaluate each option:
Option 1: The given sentence works well as an introduction. It sets the stage by comparing the brain’s organization to familiar spaces like a home office or medicine cabinet. This analogy smoothly transitions into the next sentence about the brain's "haphazard and disjointed" architecture, making it a natural fit here.
Option 2: Inserting the sentence here would disrupt the flow. This part focuses on the brain's evolved systems and how evolution works. The analogy to home offices feels out of place and does not connect coherently with the subsequent sentences.
Option 3: This gap already includes a metaphor—the brain as "a big, old house with piecemeal renovations." Adding the sentence here would be redundant, as it repeats the idea of disorganization without adding new insight.
Option 4: This section discusses how evolution doesn’t design harmonious systems. The sentence about the brain’s organization doesn’t align well with this abstract explanation, making it feel disjointed and out of context.
Option 1 is the best fit as it introduces the idea clearly, aligns with the paragraph's theme, and transitions seamlessly into the discussion of the brain's complexity.