Cho 2câu sau s1='Ha Noi' s2='Viet Nam' hãy thực hiện S1+s1
Insert (s1,s2,1)
Insert (s2,s1,4)
Delete(s2,1,6)
Delete (2,6,4)
Copy (s1,1,5)
Copy (s2,7,2)
Pos ('ie',s2)
Pos ('a',s1)
Length (s2)

Michael has written an e-mail to his employees that describes a new product special that will be introduced to the customers next week. by taking time to make sure the e-mail is well written, logical, and organized, michael has made sure his message has the characteristics of a) effective communicationb) ineffective communicationc) barriers to communicationd) workplace communication