The first opera to win widespread acclaim was D. Purcell's Dido and Aeneas.
Answer
D.Experimental bias
Explanations
Experimental bias occurs when a scientist performing a research influence the results in order to portray a certain outcome.In this case,Ron unintentionally smiled when then subject was showing to act as expected.In doing so,"smiling" the subject was able to identify the correct answer.
Answer:
- Synopsis. Born in 1882, Edward Hopper trained as an illustrator and devoted much of his early career to advertising and etchings. Influenced ...