<span>C. He knows that Jean will regret it if she does not participate in the songs at school.</span>
The first one is d
the second is a
the third one is c
if i get u wrong im truly sorry
Answer:
what was the cause the computer keyboard was change from the alphabetical order to logical order
An advantage would be that it would be first hand knowledge, so you could find out how normal people felt about situations.
A disadvantage would be that they are likely to be biased.