Question

Study the sentences below. The information looks like a paragraph, but it’s not. Can you figure out why?

An Italian named Marconi invented the radio. The first radio was called a wireless. During World War II, most people got their news from listening to a radio. Today, people often listen to radio programs in their cars. Cell phones have changed the way people live. Everywhere you go these days, you see people talking on cell phones. Some people think cell phones make life more dangerous. They can cause accidents. People shouldn’t talk on their cell phones while driving a car. Watching television can be a waste of time. Many people spend many hours every day watching television. It would be better if people would talk to each other. That would be a good idea. Some of us might discover that our neighbor is more interesting than our favorite television series.

Answer 1

A paragraph focuses on one topic and what that one topic is all about. This "paragraph" jumps from topic to topic. 

Answer 2

These sentences look like a paragraph but they are not.

A paragraph is a unit of writing that is part of a larger body of work and that expresses what the writer wants to say about a particular topic or theme.

The reason why these sentences are not paragraph is because they do not share that quality of expressing a point. Rather than that, these are sentences that deal with random topics without being related to each other.