Complete the following sentences with the correct option given below:-

Rohit used to live in Chennai at the same time when I was there too. I am sure that was where our _____.

paths had crossed

The correct answer is Option (3) → paths had crossed

Paths had crossed (Idiom) means that two people had been in the same place or situation at the same time, often without meeting or realizing it. This meaning perfectly fits the context where Rohit and the speaker lived in the same city simultaneously.