Here is the question :
WHAT DEVICE DID TELEPHONE OPERATORS USE TO CONNECT SUBSCRIBERS?
Here is the option for the question :
- Telegraph
- Switchboard
- Transistor circuit
- Computer
The Answer:
And, the answer for the the question is :
Switchboard
Explanation:
[STC0015838]. For the majority of the phone’s existence, it was impossible to make a direct call from one person to another. Instead, a third party operator would use a switchboard to connect callers. Prior to the 1930s, when technology was developed to eliminate the need for operators, approximately 235,000 individuals in the United States were employed in the telephone industry.