The Swachh Bharat Mission, launched in India, primarily focuses on sanitation and cleanliness. Its key objectives are as follows:

A. Making India open defecation free: This is a central goal of the Swachh Bharat Mission, with the aim of eliminating open defecation and promoting the construction of household and community toilets.

B. Providing clean energy to all households: Clean energy access is a separate initiative and not a direct objective of the Swachh Bharat Mission.

C. Increasing income of all people: While improving sanitation can have indirect economic benefits, increasing income is not a primary objective of the Swachh Bharat Mission.

D. Providing portable water to all households: While the Swachh Bharat Mission primarily focuses on sanitation, it indirectly contributes to improving access to clean water as sanitation and clean water are interrelated in public health and hygiene efforts.

So, option 3 is correct.