One common tip-off (it almost never fails) that answer choice on the writing section is incorrect is that it includes a verb in the passive voice. You should be aware of the few cases in which it's actually better to use the passive voice, but most of the time, you can find a better choice that rephrases the sentence in the active.

Listen to find out what any of this has to do with Chuck Norris

Do you have a reliable system for organizing the information in problems that involve converting between different units of measurement (like liters to gallons, or miles/hour to km/minute)? Today we look at how to set up a conversion problem in a way that avoids confusion.