8.6.12.1 read the theory and
choose the correct item.​

Sure, I'd be happy to help you with this question! Let's break it down step by step.

First, let's understand what the question is asking us to do. It says "read the theory and choose the correct item." This means that we need to read some information or a passage and then select the correct option or answer based on what we have read.

Now, let's look closely at the given text: "8.6.12.1 read the theory and choose the correct item." The text seems to be referring to a specific theory or passage that we need to read in order to answer the question. However, the text itself does not provide any specific information or theory. So, without the actual theory or passage, it is impossible for me to provide a detailed answer.

To solve this question, you would need to have access to the theory or passage mentioned in the text. Once you have read the theory or passage, you would then need to carefully analyze the options provided and choose the one that best aligns with the information presented in the theory.

If you can provide the specific theory or passage mentioned in the question, I would be able to provide a more detailed answer and guide you through the process of choosing the correct item.