Q: You are given a passage. Using the information present in the passage, you need to classify it into one of the 10 topics: 0 - 'Society & Culture', 1 - 'Science & Mathematics', 2 - 'Health', 3 - 'Education & Reference', 4 - 'Computers & Internet', 5 - 'Sports', 6 - 'Business & Finance', 7 - 'Entertainment & Music', 8 - 'Family & Relationships', 9 - 'Politics & Government'.
An equally valid question would be "what is the mechanism that causes WF_A to collapse when it is measured?"  The schroedinger equation does not predict collapse as a result of any interaction, so it is outside the theory taught in undergraduate classes.  There is no accepted theory (or in my opinion, any reasonable theory at all) as to why measurement causes a selection of a single eigenvalue out some non-eigenstate.  The idea that measurement on one object has ramifications on another object seems more mysterious, but it's not fundamentally different than the idea that measurement causes collapse in the first place.  You won't find a satisfying answer.
A:
1