Compare and contrast would be your answer.
Sidebars,glossary's and photographs and bolded words can help you out
Answer:
Born: March 14, 1879. Ulm, Germany
Died: April 18, 1955. Princeton medical center, New Jersey.
Answer: a is the right sanswer
Explanation: a is correct due to the fact that someone had to make an infrence as to why the bugs got in, so when they infrenece that the bugs had to get in somehow, therefore they concluded that someone left the door open.
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