Introductory Phrases

question 2

Multiple Choice

Introductory phrases

• A) are usually followed by a comma.
• B) seldom need a comma.
• C) are followed by a comma if they are very short.
• D) none of the above

---

Definitions:

Satellite

An object that has been intentionally placed into orbit around the Earth or another celestial body.

Microwave

A type of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; used in a variety of technologies, including microwave ovens that heat food.

Fiber

Fiber, in the context of telecommunications, refers to fiber optic technology, which uses threads of glass or plastic to transmit data via pulses of light, offering high-speed Internet access.

Propagation Delay

Any delay in communications from signal transmission time through a physical medium.