Step 1: Clarify Inquiry.
The "Chalo India" initiative offers complimentary e-visas to a designated group.
Step 2: Analyze Options.
- Option A: Indian tourists are ineligible for the free e-visa under this program. - Option B: Non-Resident Indians (NRIs) are not explicitly identified as beneficiaries of the free e-visa. - Option C: Accurate. Friends of the Indian diaspora who are not Indian nationals are eligible for the free e-visa. - Option D: While foreign diplomats usually receive special treatment, it is not through the "Chalo India" initiative. - Option E: International students pursuing higher education are not included in this initiative.
Step 3: Determine Conclusion.
The eligible individuals are non-Indian friends of the Indian diaspora.
Final Determination: \[\boxed{\text{C}}\]