Read the excerpt from the interview with e. y. (yip) harburg.

we thought american business was the rock of gibraltar. we were the prosperous nation, and nothing could stop us now. a brownstone house was forever. you gave it to your kids and they put marble fronts on it. there was a feeling of continuity. if you made it, it was there forever. suddenly the big dream exploded. the impact was unbelievable.

based on the excerpt and your historical knowledge, why did the stock market crash make americans lose confidence in business?
-other industries became more successful and provided needed jobs.
-most successful business owners refused to assist those in need.
-americans realized that business was not immune to failure and could collapse.
-average americans became the victims of unethical business owners.

-Americans realized that business was not immune to failure and could collapse.

Explanation:

In these lines, the author talks about the impact that the failure of businesses had on the American psyche. He tells us that before this period, Americans had an implicit trust on the continuity of business. However, after this period, they realized that business was not immune to failure. The passage does not mention anything about new industries, the role of business owners or the ethics of business.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.