The correct answer is A) Respect for the law decreased.
The outlawing of alcohol was supposed to result in America having less crime and violence. However, the actual effect was almost the direct opposite. For example, during this era millions of Americans continued to drink alcohol illegal. Many citizens lost respect for the law and continued to drink alcohol illegally thanks to the development of speakeasies (underground bars that served alcohol).
It would be that "d. Muhammad was engaged in long-distance trade where he came into contact with monotheists" that likely would have influenced his acceptance of monotheism, since this allowed for him to gain new and challenging points of view.
A efforts to get people to vote
They hid them and helped them escape.
Cotton gin- Eli Whitney
iron plow- Jethro Wood
steel plow- Oliver
reaping machine- Cyrus McCormick
clothing factory- Francis Lowell
sewing machine- Elias Howe
Hope that helped :)