Advances in networking technology and home computers have made it easy for millions of Americans to work in their homes, often facilitating the
communication between the manager, who continues to work on-site at the office, with his distant employees.
Between is used when naming distinct, individual items. Here if you understand the meaning of the sentence and then skim through the options, you'll find the sentence is talking about communication between manager and distant employee working from home. Since two parties are involved, the construction would have
BETWEEN X.....AND Y...A. communication between the manager, who continues to work on-site at the office, with his distant employees
B. communication between the manager, who continues the work on-site at the office, with his distant employees
C. communication between the manager, who continues to work on-site at the office, to his distant employees
D. communication
between the manager, who continues to work on-site at the office,
and his distant employees -
CORRECTE. communication between the manager, who continues to work on-site at the office, with his distance employees