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". 

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.
C

A man shows a video of himself training for the weightlifting events in the olympics. several times <sep> (A) he practices weightlifting while someone films him and clips him outside. (B) he is shown doing lift lifts and then off of the bar. (C) , times when they are in the olympics, coaches speak with them while the camera pans around the competition. (D) , he picks up weight and lifts it over his head.
D

[header] How to introduce your new dog to the neighbors [title] Let your dog settle in. [step] When you get a new dog you shouldn't feel like you need to introduce it to your neighbors right away. Instead, let it get used to its new surroundings and its new family first. <sep> (A) Once the dog has a steady routine and has gotten comfortable around you, then you can introduce it to the neighbors. [substeps] Waiting to introduce your new dog around will also allow you the time to figure out how it feels about strangers. (B) [substeps] Train your dog to investigate possible dangers before being brought home. Keep a constant record of your new dog's energy levels. (C) Then take the time to train your new dog. [substeps] Take your dog to the kennel if it gets left unsupervised during walks, meals, and playdates. (D) Take it for a walk around your neighborhood after dinner every night. Give it toys to play with and pick it up and carry it around.

A