D. Cloister, the meaning is cloister<span> (from Latin claustrum, "enclosure") is a covered walk, open gallery, or open arcade running along the walls of buildings and forming a quadrangle or garth.</span>
I believe that most people would not have agreed with Thoreau's position
Microwave,light bulb , phone ,
<span>Art thou afeard / To be the same in thine own act and valour / As thou art in desire?</span>