Companies transmit over the Internet because the Internet ________.

• A. is inexpensive
• B. is secure
• C. Both A and B
• D. Neither A nor B

Answer: (A)

The key idea is that the Internet is chosen mainly because it is inexpensive to use for transmission. Its global, shared, packet-switched infrastructure lets organizations reach many locations without paying for expensive private networks or dedicated lines, which keeps costs down. Security isn’t built in by default on the Internet, so while protections like encryption and VPNs can add security, they’re extra layers rather than inherent features of the medium. That’s why the statement about cost being the reason is the best fit. The other options aren’t correct because security isn’t inherent to the Internet, and saying both or neither would misstate the cost advantage that makes Internet transmission attractive.