Explain what is a commodity?

A commodity is a basic good used in commerce that is interchangeable with other goods of the same type. Commodities are most often used as inputs in the production of other goods or services. ... When they are traded on an exchange, commodities must also meet specified minimum standards, also known as a basis grade.

The meaning of the word can be vastly different depending on the context. Typically, "commodity" is used as an economic term to describe an object with high material or trade value. For example, a well-known commodity is gold.

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.

they used personification to make the truck seem mean and violent.

hope this !