Final answer:
The statement about Cy Young and boxing is false; he was a baseball player. The temperance movement was indeed influenced by urbanization and immigration. Muhammad Ali is an example of a boxer who treated boxing scientifically.
Step-by-step explanation:
The statement "Cy Young improved boxing by making it more of a science than a brawl" is false. Cy Young was actually a famous baseball pitcher and had nothing to do with boxing. The temperance movement did indeed stem from new social conditions such as increasing urbanization and immigration, as these changes brought about concerns over moral standards and public health, which included issues of alcohol consumption.
An example of a boxer who brought a level of science to the sport is Muhammad Ali, known for his tactical proficiency and famous for saying he would "float like a butterfly, sting like a bee." This illustrates the precision and strategic thinking that can be involved in boxing, distinguishing it from a mere brawl.