The proliferation of so-called cybersquatters, people who register the Internet domain names of high-profile companies in hopes of reselling the rights to those names for a profit, led to passing the Anti-Cybersquatting Consumer Protection Act in 1999, allowing companies to seed up to $100000 in damages against those who register domain names with the sole intent of selling them later.

A passing the Anti-Cybersquatting Consumer Protection Act in 1999, allowing companies to seed up to $100000 in damages against those who register domain names with the sole intent of selling them later.
B the passage of the Anti-Cybersquatting Consumer Protection Act in 1999, which allows companies to seed up to $100000 in damages against those who register domain names with the sole intent that they will sell
C the passage in 1999 of the Anti-Cybersquatting Consumer Protection Act, which allows companies to seed up to $100000 in damages against those who register domain names with the sole intent of selling
D the Anti-Cybersquatting Consumer Protection Act, which was passed in 1999, and it allows companies to seek up to $100000 in damages against those who register domain names with the sole intent to sell
E the Anti-Cybersquatting Consumer Protection Act, passed in 1999, and it allows companies to seek up to $100000 in damages against those who register domain names with the sole intent of selling

The correct answer is C ; I think it is because of the correct verb "lead to the passage of" and also it removes the misplaced modifiers in B where it is not clear if the act or 1999 allows companied to seed. Can somebody confirm my understanding is correct ?

B has several problems :
1.Modifier issue
2.with the sole intent that they will sell
- sounds incomplete,
- is wordy
- "intent of" - correct idom
- they - cyberquatters,complanies,domains??

E was a close contender
The proliferation of so-called cybersquatters, people who register the Internet domain names of high-profile companies in hopes of reselling the rights to those names for a profit, led to the Anti-Cybersquatting Consumer Protection Act, passed in 1999, and it allows companies to seek up to $100000 in damages against those who register domain names with the sole intent of selling

Simplifying further:

The proliferation of so-called cybersquatters, people who X, led to the Anti-Cybersquatting Consumer Protection Act, passed in 1999, and it allows companies to seek up to $100000 in damages against those Y with the sole intent of selling

The above SC may not exhibit IIlism but I guess its grammatically correct

The answer choice has a different problem:
1. led to the Anti-Cybersquatting Consumer Protection Act, passed in 1999
- logic is incoorect ,the sentence wordy
The law was passed in 1999 and it needs special emphasis.
Consumer Protection Act, passed in 1999
The passed in 1999 after the comma is more like "By the way, the law was passed"
led to the passage in 1999 of the Anti-Cybersquatting Consumer Protection Act is concise

Please let me know if you agree.

"passing the Anti-Cybersquatting Consumer Protection Act in 1999", in A is wrong and should be eliminated first.C is clear with correctly placed modifiers.The event has already taken place.

During GMAT prep test , I chose A , again for not good reasons. Despite knowing that after "to" "passing" looks weired. Later when I analysed incorrect response. Important thing that I missed these under the time pressure

a) I will go passing .. allowing incorrect
b) led to passage ... act.. (in 1999 -incorrect), which
c) led to passage .. act , which ... CORRECT
d) awkward .. "it".. confusing
e) awkward .. "it" confusing