Answer:
a) construction of tall buildings
Explanation:
Since the buildings during this time period were being built bigger and bigger there was more demand for elevators so people could get from floor to floor. Hope this helped :)

To prevent warping, thin, organic bonded wheels such as those used for cutting-off should be laid flat on a horizontal surface of steel or similar rigid material away from excessive heat and moisture.22 To minimise deterioration, wheels must be stored in a room which is dry and not subject to extreme temperatures.
I believe it would be letter D (maybe letter C if not D)
Answer:
This text is about homeschooling. The author's purpose is to answer some of the most important questions about homeschooling and explain its main advantages and disadvantages.
In order to achieve his/her objective, the author uses a well-structured organizational pattern which consists of an introductory part, where he/she introduces the topic and reveals his/her main objective: to highlight the pros and cons of homeschooling. In the central part, he mentions some advantages of homeschooling, while in the next passage tries to explain the biggest disadvantages of homeschooling. In the last passage, he mentions other important questions he will try to answer and uses those questions to invite the lecturers to read his book.
Text features and the organizational pattern are efficiently combined in order to help the readers regarding homeschooling, and make them understand both its advantages and disadvantages in a logical, well-structured and professional way. On the other hand, he offers some very important answers that could be considered necessary for all those readers who are searching for answers when it comes to homeschooling.
<span>I think the correct answer from the choices listed above is option B. The characteristic of the Jazz Age that is present in the first five chapters of The Great Gatsby would be extravagant lifestyles. This story is about the life of the characters in that story which gives reflection to the life of the author. </span>