Multiple choice

Giant Squid, a deep-ocean dwelling squid in the family Architeuthidae, lives at depths up to one km, where it was long thought that it was immune from human intervention.

  1. was long thought that it was immune from

  2. was long thought to have become immune from

  3. was long thought as being immune to

  4. was long thought to be immune to

  5. was long thought to have been immune to

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

Correct; compact sentence without any ambiguity; removes error of incorrect word usage by using 'immune to'