【单选题】

DearDr. Rice,

I was fortunate enough to be in attendance at theCLM Industries TechConference last week, where I thoroughly enjoyed your presentation on technology-based solutions to common office problems.And it wasn’t just me; everyone I spoke with afterward agreed that the innovative material you covered provided them with many ideas to apply to their own efforts at increasing workplace (144) .
Accordingly, I’m writing now to ask whether you might consider presenting once again, this time at an intra-company workshop my firm is putting on at the end of the month. The theme, obviously, will be improved utilization of time and resources in the workplace. We (145) to invite anyone from outside the company to speak, but I feel your insights would be invaluable to us.
Based on the overwhelmingly positive to your presentation atCLM, I suspect you might be receiving several inquiries like this one.But if there’s any way you can make an appearance at our firm, we would be very grateful. You can contact me at 555-2059 to discuss the event further.
Sincerely,
Carla White
A．sufficiency
B．formality
C．community
D．efficiency