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 exercise to prevent blood clots [title] Get up and move around. [step] Whether you're traveling by train, plane, or automobile, long-distance travel involves a lot of sitting. When you sit, you decrease circulation in your legs-especially if you sit with your legs crossed or with one foot under you. <sep> (A) If you are on a train or coach, the seat underneath you always feels flat, as if you are sitting. While there are good ways to stretch out your legs, there is not a lot a group of people can do. (B) This will help promote blood circulation to your feet. It will also keep you from rubbing your legs in an annoying manner-you can't promote blood flow when you're sitting on one leg. (C) [substeps] You can exercise while you drive or driving, although getting up and down on the exercise train can significantly improve circulation. You can also listen to music while you exercise, which will also help to prevent blood clots. (D) [substeps] If you're on a plane, try to get an aisle seat so you can get up and move around more easily. Ideally, you want to get up and stretch your legs or walk up and down the aisle once every hour or so.

SOLUTION: D

PROBLEM: [header] How to root the nexus 7 [title] Back up all information on your nexus 7 tablet. [step] All personal data will be erased from your tablet during the rooting process. [substeps] Sync your personal information with google's servers, copy your data over to your computer, or download a third-party cloud storage service app from google play store. <sep> (A) [title] Navigate to the wugfresh website at http: // www.wugfresh.com/nrt /. [title] Select the option to download the nexus root toolkit. (B) Open a folder that houses your cellular data, save the data you want to share and tap backup to backup it to your computer. [title] Follow the on-screen instructions for rooting. (C) [title] Install os x 10.1 on your tablet. [step] After installation, simply tap the " windows " icon on the home screen. (D) If you have a gigabyte device, your tablet will search your phone's applications folder for a root disk that will be used for rooting. [title] Download the latest android root installer.

SOLUTION: A

PROBLEM: He shows a close up of the leaf blower and explains the specifics of it, primes the machine, sets the camera down and starts it. He picks up the camera and gets a close up of the leaf blower again. he <sep> (A) starts to blow leaves around the plant, shoots them, etc. (B) now blows the leaves off of the roof of his shed. (C) takes another close up of the machine. (D) then removes the leaf blower while explaining.

SOLUTION:
B