Some species exhibit remarkable adaptations to extreme environments. Tardigrades, microscopic animals less than a millimeter long, can survive being frozen, boiled, dehydrated, and even briefly exposed to the vacuum of space — feats that have made them favorites of researchers studying the limits of life.
Which choice best describes the function of the second sentence in the text?
- Acheck_circle
It illustrates the general claim with a vivid specific example.
- B
It contradicts the claim about extreme adaptations.
- C
It introduces an unrelated topic in physics.
- D
It defines the term 'extremophile'.
Explanation
The tardigrade case exemplifies the opening generalization. B captures the illustrative function.