The learning objectives test contains questions on each learning unit of the “Introduction” chapter. At the end of the learning objectives test you can have your answers checked. It is not necessary to answer all of the test questions. You can use the key icon to have the correct answer displayed. The next time you call up the learning objectives test you can have your answers checked again.If you have difficulties in answering the questions of the learning objectives test, simply review the material of the relevant learning unit.