Answer:
1. lactose intolerant
2. lactase
3. dairy products
4. e.coli
5. enzymes
6. protein
7. repressor
8. operator
9. rna polymerase
10. transcribe
11. bases
12. repressor
13. operator
14. transcription
d
Explanation:
The Rats.
I think it would be the rats because its a common pest and who has chickens around their house?
