Multiple choice

Directions: Fill in the blank with appropriate option.

After several ________ attempts to send the missile into space, the space craft was finally launched successfully.

  1. abortive

  2. difficult

  3. unsuccessful

  4. experimental

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

The word 'abortive' means failing to produce the intended result, which fits the context of failed attempts before a successful launch.