TASK DEFINITION: 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". 
PROBLEM: [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.

SOLUTION: D

PROBLEM: [header] How to be a roller hockey goalie [title] Obtain all the right equipment-all the pads, the helmet, and everything else. [step] Don't try to play without it! [title] Stretch out thoroughly. [step] You should have some type of routine or comfort zone to get into the right mindset. <sep> (A) [title] Have your body on ice and ready to catch the puck (s) any pop off. [title] Lift your arms, but not too quickly. (B) If you just sat quietly for an hour waiting for the ice to harden (or something like it), you will feel tired soon after your session. Still, warming up and stretching will help your body acclimate to the cold one year ago, and you will gain muscle. (C) You'll probably find you need to stretch out much more than any of the other players. Join in the player stretch-out then move onto doing some personal stretches. (D) [title] Use a ice hockey rink and keep the doors open. [step] The best part about ice hockey is that you can roll around and skate along ice in any ice rink.

SOLUTION: C

PROBLEM: [header] How to draw blood from hard to hit veins [title] Make sure your tourniquet has been applied properly. [step] Applying a tourniquet increases the amount of blood in the vein to make them stand out more. The tourniquet should not be so tight that it cuts off the circulation. <sep> (A) This makes it hard to attach just about anything, like safety pins or bandages, to external vessels. [title] Do not put anything too heavy on the blood vessels. (B) [substeps] If it is a wrist tourniquet, you might want to remove it first. Apply the tourniquet first before you slide the string off. (C) [substeps] The tourniquet should be put on the arm about four inches above the vein. A blood pressure cuff that is inflated to 40-60 mm hg also works well. (D) [substeps] Some tourniquet manufacturers may ask you to stand to avoid any contact with blood. These tourniquet guidelines vary by manufacturer.

SOLUTION:
C