27:
Most likely B
Step-by-step explanation:
Although this question is subjective for the most part, you best bet would be Choice B as it works to separate the steps the best, while eliminating possible confusion or wordiness.
28:
It is most likely B, C, and E
Explanation: Imperative mood is when someone gives a demand or request (e.g. Do this now!) B, C, and E are all options where this is seen. Meanwhile, A and D are merely statements and do not call for an action to be done.
29:
It is most likely C and E
Explanation: To make a listing easier to read, it needs to be simple and to the point. With A, B, and D, they hold no positive effect in creating this. Meanwhile choices C and E make it easier to read and understand in a timely manner.
30:
The question is partially cut off those the process would be something like:
1) Download the App
2) Set get on location
3) Set get off location
4) Select the driver
5) Enjoy the ride
By doing this, the steps will be in chronological order, making it easier to understand and remember.
Hope this helps.