What is part of an effective introduction? a piece of evidence to support the claim
an interesting quote or fact about the topic
a reason the reader should agree with the writer
an explanation of how the reader can help

an interesting quote or fact about the topic

Explanation:

bacteria – a word that often brings out a sense of uneasiness in most of us are, in fact, one of the earliest forms of life. it can be quite unnerving to know that there are bacteria all over your skin, hair, and even inside the body. but only a few species of bacteria are dangerous. the majority of bacteria are good, and without them, life on earth wouldn’t be possible. let’s learn more about how are bacteria essential for you to survive.