Which one of these is NOT a text structure?

Identify the text structure:

Telling about the characteristics and traits of someone or something

Identify the text structure:

To show how two or more things are alike and different

Identify the text structure:

To show why something happened and what happened

Identify the main text structure used in the following passage:

Many students in the US say that they've been bullied at school. Natalie Hampton is a high school student who was bullied a lot in middle school. She often had no one to sit with at lunch. So she created a phone app called "Sit With Us." This app lets students sign up and post when there are free seats at their lunch tables. These students have promised to be kind to those who come sit with them. Hampton hopes her app will help students find people to sit with without fear of being bullied.

Identify the main text structure used in the following passage:

A river is a large natural stream of flowing water. The source of a river is the place where the river starts. This is usually the highest point in the river. Many rivers begin in springs, places where underground water flows to the Earth’s surface. Some rivers begin in melting glaciers high up in the mountains or in lakes.

Identify the main text structure used in the following passage:

Robots that look like humans are called androids. But not all robots are androids. The industrial robots used in manufacturing and production look like machines and not at all like human beings. So what does an android have in common with an industrial robot? They both have computers. And they both have sensors to gather information and ways to interact with their environments, too.

Identify the main text structure used in the following passage:

A current is a steady flow of water in the ocean. In the Pacific Ocean, garbage from the shore and ships gets trapped by ocean currents. The currents move the trash into a large area in the middle of the ocean. This has created a swirling mass of plastics and seawater called the Great Pacific Garbage Patch.

Identify the main text structure used in the following passage:

The fighting in World War I stopped on November 11, 1918. A year later, President Woodrow Wilson declared November 11th Armistice Day. He said that every year, Americans would honor and thank the veterans who fought. Armistice Day became a federal holiday in 1938.