Chad recalls that jack the ripper was a serial killer who terrorized london in 1888, but he has no idea if he originally learned this information from a book, a television show, a movie, or a story from another person. chad is experiencing a failure of memory.

source    

Explanation:

Source memory: The source memory is defined as the process of recalling a particular source of any learned information. The memories developed through source memory can be triggered by some contextual information, for example, place and time. In short, it refers to the context of memory item (the year, the occasion).

Example: The wisdom of a piece of information, that where or when it was learned.

Chad is experiencing a failure of source memory.

on these days , humidity is very f.) high

answer; sociological imagination;