Two types of transmissions:

• A. Digital and analog.
• B. Broadcast and point-to-point.
• C. Serial and parallel.
• D. Local and remote.

Answer: (B)

In communications, transmissions are categorized by how many recipients they reach with a single send: one-to-many (broadcast) and one-to-one (point-to-point). The best answer reflects this fundamental difference. A broadcast transmission sends the same signal to multiple receivers at once, which is ideal for quickly disseminating a message across many units or locations. A point-to-point transmission creates a dedicated link between two nodes, offering a private, direct channel between sender and recipient, often with higher privacy and sometimes more bandwidth efficiency for that link.

The other options describe different attributes that don’t capture how information is distributed to receivers: digital versus analog is about the signal form, not how many people or nodes receive it; serial versus parallel is about how data is moved within a link, not the audience being reached; local versus remote refers to geographic scope, not the transmission pattern.