Statement 1 is Correct: Atal Pension Yojana is a minimum guaranteed pension scheme primarily targeted at unorganized sector workers in India. It encourages saving for retirement through regular contributions during their working years. Statement 2 is Incorrect: There is no restriction on the number of family members who can join the Atal Pension Yojana scheme. As long as they meet the eligibility criteria (age 18-40 and savings bank account), multiple members within a family can enroll. Statement 3 is Correct: Atal Pension Yojana provides a pension benefit for the spouse after the subscriber's death. The spouse becomes the nominee and receives a pension, though the specific amount might differ depending on the chosen pension plan by the subscriber. Hence, option C is the correct answer.