Answer:
Did you know that technology has opened the doors for innovation, learning and exploration? Technology has given us the advantage of instant communication worldwide and is an endless hole of knowledge most people can have access to. Technology has greatly improved our way of life from medicine, transportation and personal healthcare.
A topic sentence has many important duties to a paragraph.
A topic sentence must highlight the main idea of a paragraph, letting the reader know what the paragraph will be about. The topic sentence must present an idea that will unify the rest of the paragraph while relating it back to the main thesis of the paper.
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They are all different in some kind of way.
Explanation: The effect of the commentary shows that Nick is reflective, and is very observant of past events.
Review your essay =D hope got it right