The correct option is B gently insistent
We can determine the correct answer by using logic and by eliminating the incorrect answer. The attitude of the author towards the reader is neither hostile nor disgusting. He is also not ambivalent as his poetry does not reflect any contradictory ideas. He rather insists readers to follow the path of wilderness and nature than be caged in a golden cage. Thus option B is the correct answer. Options A,C,D,E are incorrect.