D. Several factors led to the beginning of World War I.
The topic sentence from the passage shows us that it follows a cause and effect pattern. It sets the reader up to understand that the rest of the passage will be about several factors that caused World War I. The rest of the options are the different factors that led to World War I. They do not use key words that would indicate a cause and effect patterns like the words "Several" and "led" do in the first sentence.
Many reasons in a free market capitalistic system; their product or service is not in great demand, their product /service is not the best one on the market in terms or quality/price, their product/service does not have enough publicity to sell well, big corporate companies (amazon, walmart, etc.) have a monopoly on most goods and services and sell them at lower prices while underpaying/ overworking workers
Options are she or her.
We were please to read about her winning...
In this case, we need to use "her." "She" and "her" are both gender specific pronouns. However, "she" is a subjective pronoun. This means that it can replace a noun in a sentence. "Her" is a possessive noun and can function as the possessive of "she" or the object of a verb and preposition. In this sentence we need to use "her" because she possesss the place on the ticket.
B. she tried to drink the poison from his lips bit didn't work. she then stands herself with the dagger
