听力文本如下：

Hannah begins her presentation by saying that she conducted eight focus groups, each with 10 to 12 people who currently use the product.

That means that she asked a total of 80 to 96 people for their opinions about the product.

Remember a focus group is a way that companies get information from their customers by bringing in 8 or 10, or 12 people into a single room, and asking them questions - interviewing them together.

Hannah says that in the pie chart she's showing them, the yellow-shaded area represents the participants who buy the product from Vision Corporation.

So, Hannah is showing them a pie chart.

A “pie (pie) chart” is a visual or picture used in reports and presentations and it is a circle made of different colors where the size of each piece of the pie represents the percentage or number of something.

A “pie” is normally a round thing that you eat; it's a sweet dessert.

Here, a “pie chart” means a round circle that is divided up into pieces that represent percentages or numbers.

When Hannah says the “yellow-shaded area,” she means the section, or part, of the circle with a yellow color.

Hannah says that the participants represented in the yellow-shaded area comprise only 13% of the people she spoke with.

To “comprise” (comprise) means to be a group that is made up of something or that contains different parts or things.

You might say, for example, the United Nations is comprised of representatives from every country in the world; that would be a use of the verb “comprise.”

In other words, Hannah is pointing to a pie chart that represents all the people she spoke with who use the product.

One section of that pie chart represents 13% of the people; that part - that section is shaded, or colored, in yellow, representing the people who use the product that Vision Corporation sells.