When the author gets paid.
As soon as the work is created.
When it is published with a © symbol.
When it is registered for copyright.
Forever, as long as someone holds the copyright
70 years after it is created
A person's life plus 70 years after death
It depends on the type of registration that was bought
It can be bought
There is no time-limit on copyright
The work must be destroyed
It goes into the public domain
True, how else would you know if it was in the public domain or not?
False, a work belongs to the creator whether or not there is a © symbol
Paying the creator a fair price for the work
Using paid-for commercial products once and not sharing them
Limited copying or distribution of published works without the author's permission
Freeware that you obtain from the Internet
Purpose, Content, Amount, and Market Effect
Purpose, Amount, Environment, and Market Effect
Substantiality, Use, Nature, and Market Effect
Purpose, Nature, Amount, and Market Effect