Give an ax ample of a non-testable question

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

What pattern of migration do whales follow?