Abdul, Rahila, Karan, Rahul, Reena, Manju and Heena are members of a family consisting of four adults and three children. Two of them, Manju and Heena are girls. Abdul and Rahul are brothers and Abdul is a doctor. Reena is an Engineer married to one of the brothers and has two children. Rahila is married to Rahul and Heena is their child. Who is Karan?

Given information about the family:

• 7 members total: 4 adults and 3 children
• Manju and Heena are girls
• Abdul and Rahul are brothers
• Reena is an Engineer married to one of the brothers and has two children
• Rahila is married to Rahul and Heena is their child

---

Identifying the adults:

Abdul and Rahul are brothers, so both are adults.

Rahila is married to Rahul, so Rahila is an adult.

Reena is married to one of the brothers. Since Rahila is already married to Rahul, Reena must be married to Abdul. Therefore, Reena is an adult.

Adults: Abdul, Rahul, Rahila, Reena (4 adults ✓)

---

Identifying the children:

Heena is the child of Rahul and Rahila.

The remaining people are Karan and Manju. Since we have identified 4 adults and need 3 children total, both Karan and Manju must be children.

Children: Heena, Karan, Manju (3 children ✓)

---

Reena is married to Abdul and has two children.

Since Heena belongs to Rahul and Rahila, the two children of Abdul and Reena must be Karan and Manju.

Manju and Heena are girls, so Karan must be a boy.

Therefore, Karan is Abdul's son.

The answer is Option 1: Abdul's Son.