The answer is C). The group of clueless tourists needs to purchase a map.
The subject here is "group", a singular noun, thus our verb also needs to be singular (i.e. "needs"). To check if we have subject-verb agreement, remove the "of clueless tourists" phrase and see if it the sentence would make sense.
"The group needs to purchase a map."
<em>Hope this helps.</em>
Answer: According to Aristotle, thought is the use of dialogue to reveal theme.
Answer:
One fact that I found out during my research was that some cells have the ability to move their flowers in the direction of the Sun while others do not. Sunflower and other flowers which belong to the family Asteraceae show such kind of behaviour. These flowers might have a random orientation at night. But at the time of morning, they turn east towards the sun and follow its direction throughout the day.
