In comparing cooperative learning to traditional teaching methods, most research consistently favors cooperative learning, provided that two essential conditions are met. According to our text, there should be some group recognition and there must also be:

individual accountability

Explanation:

When dealing with cooperative learning the two conditions that need to be met are group recognition and individual accountability. This second requirement refers to the belief that everyone will be accountable for his/her performance and/or learning. This requirement prevents individuals that are part of a team from sitting back and letting the other members of the team do all of the work, while still reaping the benefits. Thus enforcing true cooperation.

the 2nd option is the answer

the answer would be in this answer. someone already asked the question.