Answer:
C. Twice, after mountain and evening.
Step-by-step explanation:
When reading a poem, it is crucial to see where the punctuation is. And in this poem by Priest Jakuren, we find that there is a comma right after mountain (in the third line) and then a full-stop after evening (in the fourth line). For the comma, there should be a short pause while for the full-stop, it can be a long pause. So, overall, there should be a pause twice when reviewing the lines of the poem.