The answer is: Diminish
It means to make or become less
The answer would be A because the word charm has a positive connotation and without the connotation of the word charm, the passage’s tone would be a bit more negative about the situation. with the connotation of the word charm it gives it a more positive tone
Most of the poem "An Hymn to the Evening" concerns itself with giving praise to God for any personal virtue we have acquired. Its Christian message is not considered neoclassical and the model to which all other pastoral poetry should aspire. Hope this helps.