Context: About 4 weeks ago now , the toilet blocked . It was an ordinary day , and an ordinary flush , yet , it did n't flush properly . Consequently , it blocked . I called the realestate agent and they had a tradesman out to unblock the toilet .

Question: Why did that happened to it ?
Options:
0. Something got stuck in it .
1. It 's a fast flush .
2. It flushed perfectly .
3. It flushed fine .
Answer: 0