The really important cause of the recent increase in renewable energy sources is new technology.

revise the sentence to remove vague, empty words.
a. delete “renewable.”
b. delete “recent.”
c. delete “new.”
d. delete “really.”

Since we have to choose from the multiple choices, we have to sort it out option by option. The answer is not A because the sentence itself concerns renewable energy. If we delete recent, we will lose the correct meaning of the sentence concerning the increase related to time. Therefore, B is incorrect. C is not correct, as well. The sentence concerns new technology, not just any technology. Then, the correct answer is D. Indeed, "really important" is not a correct usage.  

kellan is struggling with the amount of work he has to do

hope this : 3

c is a symbol. when bernice gets her hair cut, it is the authors way of showing the affects and demands of pier pressure and the over-all attitudes of people at the time.