Which of the following correctly use conjunctions and punctuation? Check all that apply. The policy has prevented the world's resources from being stretched to the limits, it has created other social ills.
Although the policy has prevented the world's resources from being stretched to the limits, it has created other social ills.
The policy has prevented the world's resources from being stretched to the limits, but it has created other social ills.
The policy has prevented the world's resources from being stretched to the limits yet it has created other social ills.