The answer is letter B) I look forward to receiving your feedback on my efforts
It is the most professional and refers to the content of the email.
Hope this helps!!!
<span>When drawing conclusions about an expository text it is most important to first get and pluck out the main ideas and important facts that would support the conclusions you are about to draw. This is important so that you have a strong argument and evidence with your conclusions.</span>
It is going to be second one