Tamil Nadu’s scheme providing free breakfast to primary school students is titled:

The correct answer is Kaalai Unavu Thittam.

Kaalai Unavu Thittam is a Tamil Nadu government scheme that provides free breakfast to primary school students. The scheme was launched in 2011 and aims to improve the nutritional status of students and reduce dropout rates. The scheme provides a nutritious breakfast to students at government and government-aided primary schools across the state. The breakfast is prepared in the school kitchen and is served to students in the morning assembly. The scheme has been well-received by students and parents, and has been credited with improving the attendance and performance of students.

The other options are incorrect.

• Chief Minister’s Breakfast Scheme is a similar scheme that is implemented in Andhra Pradesh.
• Amma Unavagam is a scheme that provides free food to pregnant women and lactating mothers.
• Illam Thedi Kalvi is a scheme that provides free education to children from poor families.