instruction:
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". 
question:
An introduction comes onto the screen for a video about rock climbing and a man introduces what will happen in the video. a men in a blue shirt <sep> (A) is doing a jump and falling off, then he begins to climb along the rock face with another by him. (B) stands behind a rock wall talking. (C) is shown climbing all the way to the top of a rock. (D) and the interviewer is inside of a gate in a park and he begins by jumping up to the top of a roofed wooden fence to do various things.
answer:
C


question:
[header] How to perform an autopsy on a human being [title] Understand what an autopsy is. [step] An autopsy is a detailed examination (and dissection) of a human body after death. It is used to determine the likely time and cause of death, as well as to evaluate the presence of disease and/or injuries. <sep> (A) An autopsy is often performed during the day after a death, or at night. Depending on your body type, an autopsy can last longer or shorter if done with the right equipment. (B) The autopsy is often conducted as a procedure administered in an office, rather than a surgical procedure, but it is treated in multiple ways. [substeps] For a crime scene autopsy, the job is to put the human body's dna on a piece of paper and then render it to a laboratory for analysis. (C) [substeps] An autopsy is conducted by a pathologist, which is a doctor with specialty level training in how to do the procedure and how to effectively analyze the tissues and body fluids. If the person's death is being investigated forensically, an autopsy may be legally mandated. (D) A typical autopsy takes place approximately 50 minutes after the death of the patient. The procedure consists of the following components : [substeps] Removing the deceased's organs from the body.
answer:
C


question:
[header] How to save yourself from poisoning [title] Call for help. [step] If you suspect that you have been poisoned, it is key to call for help immediately. The time delay between the poisoning and treatment can mean the difference between life and death in some cases. <sep> (A) Even a vaccine may not provide enough time. Take action and seek medical attention immediately, following up a call or email to your doctor. (B) For instance, if you were diagnosed with a clinical intolerance of multiphthalgia, but someone else in the house poisoned you, the first step is to call emergency services right away to see what options are available to you. In some cases, due to more advanced complications such as abnormal blood count, it is necessary to make a call for help. (C) Call 911 if you understand you are at risk, you may be at greater risk. [title] Take medications according to the manufacturer's guidelines. (D) Therefore, call emergency medical services (911) immediately, or your local poison control centre for advice on how best to proceed. [substeps] The phone number for the poison control centre in the united states is 1-800-222-1222.
answer:

D