It's good practice to keep your e-mails _____ and easy to read when corresponding with your business partners. No one has the time to read long e-mails nowadays.
Ainscrutable
Bformidable
Cconcise正確答案
Delaborate
答案與詳解
concise意為「簡潔的」,與easy to read並列,且呼應後句「沒人沒時間讀長信」,為正確答案。
