Multiple choice

Directions: Fill in the blank with an appropriate word from the given options. Many of the advances of civilization have been conceived by young people just on the _______ of adulthood.

  1. horizon

  2. threshold

  3. peak

  4. boundary

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The 'threshold' of adulthood is a common idiom referring to the point of entering a new stage of life.