Jatin Ragav is reading fast, looking for specific information in a machinery…

Reading involves different sub-skills depending on the reader's purpose: skimming means reading quickly to grasp the overall gist or main idea of a text; scanning means reading quickly through a text to locate one specific piece of information while ignoring everything else; bottom-up reading means building meaning by decoding smaller units, such as letters and words, into larger ones; and critical reading means evaluating a text's arguments, evidence, or reliability.

Jatin is reading fast specifically to find one particular piece of information in a machinery manual — he is not trying to get an overview of the whole manual, decode it word by word, or judge its quality. That purpose, a fast and targeted search for a single detail, is the defining feature of scanning.

Checking each option against this purpose:

• Skimming would apply if Jatin wanted only the manual's overall gist, not one specific fact.

• Bottom-up reading describes decoding a text unit by unit to build meaning; it is a model of HOW meaning is constructed, not a speed strategy for locating one detail.

• Critical reading involves evaluating or judging the content of a text, not quickly searching it for a fact.

Since Jatin's purpose is a fast, targeted retrieval of one specific detail from the manual, this reading sub-skill is scanning.