Multiple choice

Directions: Choose the appropriate word from the given options and fill in the blank.

When Marie and Pierre Curie discovered Radium, they had no idea of the --------- impact their discovery would have upon society.

  1. torrid

  2. fiery

  3. ravaging

  4. momentous

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

 The sentence suggests that the discovery made a huge impact. The closest word to 'huge' is 'momentous'.