Select the most appropriate option to fill in blank number 2.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. of.
- The Preposition "Of" is often used to show the position of something/somebody in space or time.
- Example: at the time of the revolution.
- In the given statement, "periods of contact" seems to make a meaningful context with the paragraph.
Hence, the chosen option is correct.