Correct Answer - Option 1 : 1

**Given:**

3 years ago, the average age of a family of 3 members was 34 years. A baby having born, the average age of family today is 28 years.

**Calculation:**

Total Age of a family 3 years ago = 34 × 3 = 102

Present age of the three members = 102 + 3 × 3 = 111

Now, there are total 4 members

⇒ Total age of the family today = 28 × 4 = 112

Age of a child = 112 – 111 = 1 year

**∴ Age of the child is 1 year**