The correct answer is the following: option b. A standardized test essay prompt has three parts.
A standardized test is a type of test that requires all takers to answer the same questions in the same way and that is scored in a standard manner, which makes it possible to compare the performance of individual or group of students. Most standard tests include a writing portion in which the student is expected to write an essay based on a writing prompt that was given to them. This type of essay has three parts: the introduction, the supporting details and lastly the conclusion.