Part 1. Definition
In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 
Part 2. Example
[header] How to create a christmas tree forest [title] Consider the type of tree you want to plant. [step] There are a wide variety of christmas trees and include fir, pine, spruce, cypress, and cedar. These trees thrive in different climates and look different from one another. <sep> (A) It is important to research the tree before setting up your tree to try it out to make sure you can write the tree's growing season so that you can get the most supplies you need. If you're just interested in having a tree stand out, then make sure to check for the following : [substeps] Spruce trees. (B) [substeps] Trees green may be used in a mix of green and evergreen. Greens, such as pintos and olive oil, may be more delicate than these. (C) Where the trees grow together is up to you. [substeps] Spruce trees light up the night for hours in the morning and drown out the morning sunrise between afternoons. (D) Think about where your tree forest will be located and choose a tree that can thrive in that climate. [substeps] Balsam firs are a popular christmas tree species that grow in the northern united states and canada, in hardiness zones 3-5 or states like minnesota, north dakota, and montana.
Answer: D
Explanation: This is a good example. Only option D is about Christmas trees. So, it's the correct option.
Part 3. Exercise
[header] How to overcome depersonalization [title] Acknowledge and accept the feeling of depersonalization. [step] The feeling of depersonalization is usually not dangerous and commonly fades. Remind yourself that the feeling is uncomfortable, but temporary. <sep> (A) This will make depersonalization have less control over you. [substeps] Tell yourself, " this feeling will go away. (B) When you become angered, sad, or upset, externalize the feeling. [substeps] Being angry with yourself is a common subconscious reaction, so you may want to deny that you're experiencing depersonalization. (C) Feel it for a moment and then move on to facing the emotion. [substeps] Change your attitude to acknowledge and accept that feeling. (D) Don't try to combat it or force yourself to deal with it. Remember that someone who is depersonalized can suffer a variety of life events, from being bullied or disturbed, to childhood problems, and to unexplained medical conditions.
Answer:
A