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.
A thesis statement is usually located at the end of the introduction paragraph, (first paragraph.)
The answer is c. Theo, is there a bug on my back?
This is because for the other three sentences, the commas do not agree with the places they were put in. If you read the sentences aloud, you can hear that it sounds awkward.
Answer: Play is a verb.
Used in a sentence: He will ‘play’ outside.
