Answer:

Skimming - reading rapidly through the pages to save time and get the general idea of a book. It focuses on typographical cues-headings, boldface and italic type, indenting, bulleted and numbered lists in order to obtain what is the book all about.

Scanning -  Its goal is to locate particular facts using keywords and organizational cues. The keywords you may use in scanning may be in the questions need to be answered or the topic you are looking for.

Intensive - It involves reading in detail with specific learning aims and tasks. It is reading with full concentration and complete focus.

Extensive -  It involves learners reading texts for enjoyment and to develop general reading skills. It is the reading style that bookworms enjoy.