Answer:
B. Happy
Explanation:
"Blithe" is a word that refers to something that is carefree and happy. It describes a heedless attitude about the world, and a lighthearted disposition. Moreover, someone who is "blithe" would be described as someone cheerful, joyous and merry. Therefore, what this text indicates is that although Emily Dickinson did not usually produce cheerful comments or happy outcomes, she is still regarded as one of the most talented poets of the nineteenth century.
