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".

A male toddler is sitting on the floor near a female toddler and they are playing miniature floor foosball. the young male <sep> (A) toddler strikes out against the female toddler. (B) toddler on the right misses and pushes the toddler closer to the table and they both accidentally fall. (C) takes his hand and reaches inside to grab the soccer ball. (D) toddler is wearing earphones that are dangling from his head and he reaches back towards the camera to play.
C

[header] How to polish rocks [title] Choose the right rock. [step] You can polish any stone you wish, but there are certain characteristics of a stone that will make it easier to polish. If you want an easy stone to polish, pick a somewhat softer stone like onyx, limestone or calcite. <sep> (A) [substeps] You can polish diamond, granite or ceramic stones by cutting thin pipe holes or inserting dry mortar into one side of each hole. Look for a stone that resembles a diamond, but not necessarily a diamond. (B) Otherwise, a smoother, more pumice-like stone will be more difficult to polish. [substeps] Emeralds and equilateral manganese are both excellent mineral polishes. (C) Stones that are very hard will take a much longer time to polish. However, though hard rocks take a long time to sand, they yield more shine than softer rocks. (D) Softer rocks will actually work more well, and might look better to polish very old stones, but brighter stones tend to chip quicker. [substeps] Rubies, sapphires, and emerald are good options.
C

[header] How to buy dog food [title] Ask your veterinarian about reputable brands. [step] There are few regulations controlling the manufacturing process of dog food, which makes it very important to ask a veterinarian or board-certified veterinary nutritionist for suggestions of quality dog food brands. Your vet is a great source of information regarding your dog's diet. <sep> (A) [title] Check the temperature of your dog's food. [step] If your dog has a higher body temperature than is needed, you'll want to consider purchasing dog food instead of the grocery store. (B) However, in some cases dog food may not be the best idea. A loose diet may upset the dog's digestive system, lead to bloating, and lead to weight loss. (C) They can suggest brands from experience, and also tailor their suggestions to your dog's unique health needs and profile. [substeps] Once the vet gives you suggestions on a few good brands, you can do your own research to choose which kind is best for your dog. (D) [substeps] Additionally, look for any name brands or names that directly connect to the type of dog food you are looking for. For example, orange juice cannot likely contain more than 250% caffeine.
C