Option B. Rna polymerase provides a template for dna is the correct answer.
Explanation:
Messanger RNA is produced in the nucleus using the nucleotide sequence of DNA as a template. The messanger RNA needs nucleotide triphosphates for its production and is catalyzed by the enzyme RNA polymerase. Transcription is the process in which messanger RNA is produced from deoxyribonucleic acid (DNA).
I think the best answer would be A. since the number of prairie dogs decreased from the picture on the left to the picture on the right. Hope this helped :p