1. Eliminate B and D based on SV agreement (them --> cows)
2. Eliminate A because "provided" and "milked" need to modify the "cows", wrong tense
3. Eliminate C for parallelism problem between the verbs
4. Right answer is E
2. Eliminate A because "provided" and "milked" need to modify the "cows", wrong tense
3. Eliminate C for parallelism problem between the verbs
4. Right answer is E





