Answer:
There are three parts to an introduction: the opening statement, the supporting sentences, and the introductory topic sentence. There are many ways to write an introduction, but it is necessary to include each of the three parts:
an opening statement or question that attracts the reader's attention — this is often called "the hook",
supporting sentences which link "the hook" to the thesis, and
a thesis statement that states the purpose and plan of the whole essay.
