D: Anaphora is the answer
I think it is adverb clause because of the word "hardly" which emphasises the ripple of the water
Answer:
Zealous (adjective): showing passion for something
1) The zealous ace student studied every single day to make sure that he would pass his exams
Scruples (noun): a hesitating because you’re worrying if an action is moral or not
2) Although he had scruples about conducting the scam, he still continued to ensure that he would make money
Explanation: