The correct answer is parenthesis. A parenthesis normally appears in sentences when extra information unrelated to the main idea of the sentence is inserted. The trick in knowing if a phrase can be included in a parenthesis is when you take it out and the idea of the sentence is intact.
In 1930s America, it seemed entirely logical to combine the astounding height of the new skyscraper architecture with the burgeoning international airship industry. When the 381-metre Empire State Building officially opened on May 1 1931, America was struggling through the Great Depression.Oct 6, 2007
Answer:
I would say c.
the methods of sampling is neither biased nor unbiased
í nєvєr hєαrd thєѕє nαmєѕ вєfσrє, rєαllч ѕσrrч mαtє :)