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 bend rebar [title] Understand the structural issues possible with manually-bent rebar and know how to avoid them. [step] When you bend metal, you naturally weaken it. When done correctly, however, you can minimize damage and still get the shape you need to complete the project. <sep> (A) [substeps] Badly bent rebar acts as a buffer for the metal particles of the laser beam. The piece of rebar you are bending dissolves when squeezed into contact. (B) This effect is part of the re-bend method. The process is a little different than rebending a rubber band, but the difference is that you bend it in half by simply opening up a v on each end. (C) Because of this, it's important for you to know how to modify the shape you want the rebar to be. If you have a badly bent rebar, you'll likely create grooves in the rebar that introduce excess material. (D) Keep the following in mind as you work : [substeps] Always note the grade and size of the bar you're bending, checking against the equipment you're using to ensure it works. Check with your project engineer to ensure your bends meet the minimal internal bend diameter.
[EX A]: D

[EX Q]: [header] How to include spanking in child discipline [title] Find a private area. [step] Conducting this type of discipline in a private area preserves the dignity of your child and prevents unnecessary embarrassment. The focus should be on discipline and additional embarrassment for your child should be minimized. <sep> (A) [substeps] Look for a private area free of distractions. Have a book or other non-distracting object nearby to quiet the child and yourself. (B) [substeps] Most experts are adamant that children should never be spanked under any circumstances. Nonetheless, some parents believe that spanking is the best way to get children to adhere to rules. (C) [substeps] If you have permission to do so, choose a private area to discipline your child in private. It will help your child feel at home instead of surrounded by other adults. (D) There are a wide variety of private areas you can think about according to age and the individual or group of children that you're spanking. [substeps] Children should have close supervision at all times.
[EX A]: B

[EX Q]: People are running down a street. Cars are driving on the street behind them. a woman in shorts <sep> (A) is running down the street. (B) is in the street and puts her arms up. (C) runs around on the street. (D) is setting up a video in a gym.
[EX A]:
A