Read the excerpt from The Building of Manhattan. It was a monumental task: to design the world's tallest building, create as much usable rental space as possible, plan so it could be built within 18 months, and still have a handsome building. In the end, architect William Lamb worked on fifteen designs before his plan "K" was finally chosen. Which words cannot be changed when paraphrasing this text? "monumental task" "handsome building" "fifteen designs" "usable rental space"

The correct answer is "fifteen designs"

Explanation:

In paraphrasing a text, most ideas are expressed using different words and terms from the ones in the original text. However, specific information, such as numerical details or proper names cannot be modified because this would change the original ideas, which is not appropriate. This implies in the text presented, most of the ideas can be modified except by details such as "William Lamb", "18 months" and "fifteen designs". According to this, the correct answer is "fifteen designs".

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.