Answer:
The most logical order of the given sentences is: (c) DCBA.
Step-by-step explanation:
Sentence (c) introduces the realists' belief in the possibility of determining the truth or falsehood of a theory. Sentence (D) supports this view by stating that most working scientists subscribe to this position. Sentence (B) then elaborates on how this is possible, by stating that reality exists independently of ourselves and is discoverable through the methods of science. Finally, sentence (A) provides a brief summary of the realists' position. Therefore, the correct order is DCBA.