(A) [color=red]passing[/color] the Anti-Cybersquatting Consumer Protection Act in 1999, allowing companies to seek up to $10,000 in damages against those who register domain names with the sole intent of selling
"passing" acts as a dangling modifier,(who passed?)..it doest have an
agent.
B)"which" relative pronoun refers to "1999"
d)changes the meaning
(E) the Anti-Cybersquatting Consumer Protection Act,passed in 1999 and allowing companies to seek up to $10,000 in damages against those who register domain names with the sole intent of selling
Here one past event and one present condition are incorrectly made parallel..
thanks,
i hope this helps.