Which detail from “Thomas Edison: The Master of Improvement” explains why Swan’s lightbulb failed to be successful?

A: “He developed and demonstrated the first small lightbulb in 1878.”
B: “Its glow was produced by electricity passing through a filament, or tiny piece of material.”
C: “The inside of the glass bulb was a vacuum. In other words, it was oxygen-free.”
D: “[The] bulb did not glow for long, however. It produced light for only thirteen hours.”

Which phrase in this excerpt from james joyce's "araby is a participial phrase? north richmond street, being blind, was a quiet street except at the hour when the christian brothers' school set the boys free. an uninhabited house of two storeys stood at the blind end, detached from its neighbours in a square ground. the other houses of the street, conscious of decent lives within them, gazed at one another with brown imperturbable faces the former tenant of our house, a priest, had died in the back drawing-room. air, musty from having been long enclosed, hung in all the rooms, and the waste room behind the kitchen was littered with old useless papers. among these i found a few paper-covered books, the pages of which were curled and damp: the abbot, by walter scott, the devout communicant and the memoirs of vidocq. i liked yellow. the wild garden behind the house contained a central apple-tree and a few straggling bushes under one of which i found the late tenant's rusty bicycle-pump. he had been a very charitable priest, in his will he had left all his money to institutions and the furniture of his house to his sister.

Iwill have sailed around the world by the end of next year. what is the verb form in the sentence? future perfect past emphatic present progressive past perfect

Which statement best describes the intended aesthetic impact of this excerpt?