Answer:
If you need to grasp the topic of a document quickly, you can follow the previewing strategy.
Step-by-step explanation:
Reader use the strategy of previewing to grasp the topic of a reading before actually reading all the information, they skim the text and get as much information as they can without spending a long time in the reading, then when they need to go back and read all the information in detail they can understand it easier and faster.