Answer:
To inform readers about one reason why cycling was controversial in the 1800s
Explanation:
The reason why the author mentions Dr. Richardson's research is to inform the readers about one reason why cycling was controversial in the 1800s.
<em>Wheels of Change</em> is a book written by Sue Macy about how important cycling was in the emancipation of women in late-nineteenth-century America. The purpose of the book is mostly to inform - not to persuade or entertain. Dr. Richardson is a prominent figure from that time, and Macy tells us about his opinion on this matter.
There are many factors involved in the improvement in the life expectancy such as sanitation, housing, scientific research to cure many diseases and infections, education etc.
Historically it was the nineteenth and early twentieth century when all these improvements were made due to which the mortality rate decreased intensively in early and middle ages.
Answer: D)
Explanation: its the only answer that makes sense to replace with it
<span>six less than: Think of this as "minus 6" or -6.
number: Think of this as "n."
one-third of a number: Think of this "as one-third of n" or (1/3)n
Putting that together:
(1/3) n - 6 ---> finally 1/3n-6
for six less than one-third a number</span>
