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".

[EX Q]: [header] How to build a passion for cooking [title] Make a list of your favorite foods to eat. [title] Go to your local public library website. [step] Type the names of these favourite foods into the search bar. <sep> (A) This will let you create your own lists of the foods you like to eat. Also, there will likely be a section where you can put your personal information about the food that you like. (B) If you are a parent, keep an internet encyclopedia online. Tell with the patient that you have a hard time remembering the specifics of these foods. (C) For each item, choose the cookbook that looks the most interesting and put a request on it. [title] Select the recipes that resonate with you. (D) [title] Pick up a crock pot and fill it with warm water. [step] Cook the mixture for a few minutes until the water is cold.
[EX A]: C

[EX Q]: [header] How to know if your dental fillings need replacing [title] Watch for tooth sensitivity. [step] If you have fillings that need replacement, you'll likely feel it first. Paying attention to the physical symptoms of old or decaying fillings can let you know if it's time to have your dentist replace them. <sep> (A) One sign that your fillings may need replacing is if you have tooth sensitivity to temperature, sweets, or pressure. [substeps] Pay attention when you bite into any cold, hot, or sweet foods. (B) Teeth sensitivity occurs when gums become severely stained with white blood. These white discolorations are mainly due to gum disease, but most commonly introduce a white blood cell colony to the side of your mouth. (C) Once your doctor notices an increase in tooth sensitivity, he or she can return you to the dentist. [substeps] Are your teeth hurt or moist? Severe tooth pain, cramping, sensitivity, or tingling are all signs that they need replacement. (D) [substeps] Bad tooth sensitivity is usually not a problem until it gets worse and you start to feel pain. You may experience sensitivity at night and bad teeth at the same time.
[EX A]: A

[EX Q]: [header] How to study chemical reactions and their thermodynamic parameters [title] Define a chemical reaction. [step] A chemical reaction involves bond breaking and bond formation. In order to understand a chemical reaction, one needs to understand the meaning of a chemical bond. <sep> (A) As an example we take the hydrogen molecule. This molecule is stable enough to exist and has one sigma bond between its hydrogen atoms. (B) Basic law of chemical relationships between atoms atoms helps us understand the theoretical state of a particular atom after it is applied to a molecule. Understanding the context will help us understand chemical reactions differently. (C) The start button of a chemical exchange is always identified with a symbols near the beginning. [substeps] The initial area of the equation to learn about this can be the path for the reaction that is occupying space and processing the energy of the chemical. (D) Do this by doing a series of equations that outline the problem. This must be explained within each one to make sure that it is explaining logically.
[EX A]:
A