Identify if the three sentences are reliable or unreliable. A. The first pioneers to explore the opal fields found an unpleasant and unfriendly environment. B. None of the pioneers liked summer because it was dreadfully hot. C. To adapt to the challenging environment, pioneers built underground homes. (1 point) Responses A is reliable, B is reliable, C is unreliable A is reliable, B is reliable, C is unreliable A is reliable, B is reliable, C is reliable A is reliable, B is reliable, C is reliable A is reliable, B is unreliable, C is reliable A is reliable, B is unreliable, C is reliable A is unreliable, B is unreliable, C is reliable

To evaluate the reliability of the sentences:

A. "The first pioneers to explore the opal fields found an unpleasant and unfriendly environment." - This sentence can be deemed reliable if supported by historical accounts or testimonies of the pioneers.

B. "None of the pioneers liked summer because it was dreadfully hot." - This sentence lacks nuance; it's unlikely that "none" of them disliked summer. Individual preferences may vary, making this statement less reliable.

C. "To adapt to the challenging environment, pioneers built underground homes." - This sentence has a historical basis; many pioneers, especially in certain harsh environments, indeed built underground homes as a form of adaptation, making it reliable.

Based on this analysis:

- A is reliable
- B is unreliable
- C is reliable

Thus, the best answer is: **A is reliable, B is unreliable, C is reliable.**