NEERI is
a. National Environmental Engineering Research Institute ·
b. National Ecological and Environmental Research Institute ·
c. National Ethnological and Ecological Research Institute
d. National Eugenics and Ecological Research Institute.

Hint: CSIR-NEERI an examination foundation made and subsidized by the Legislature of India. It was built up in Nagpur in 1958 with the center around water flexibly, sewage removal, transmittable infections, and somewhat on mechanical contamination and word related illnesses discovered normally in post-free India.

Complete answer:
NEERI is a pioneering lab in the field of ecological science and building and part of the Gathering of Logical and Modern Exploration (CSIR). NEERI is National Environmental Engineering Research Institute. So, option A - National Environmental Engineering Research Institute is correct.

- The NEERI is a significant accomplice association in India's POPs public execution plan (NIP). The Public Ecological Building Exploration Organization (NEERI), Nagpur was set up in 1958 as Focal General Wellbeing Designing Exploration Foundation (CPHERI), when natural concerns were restricted to human wellbeing with an emphasis on water flexibly/sewage removal/transferable illnesses and somewhat on modern contamination and word related ailments

- The concoction and organic answers for addressing these issues were straightforward, however testing. In any case, gradually overall public mindfulness on the pollution of condition on a local to worldwide scale began getting consideration in the 1970s

- Shrimati Indira Gandhi, then Executive of India, rechristened the Foundation as Public Natural Building Exploration Organization (NEERI) in the year 1974.

- Public Natural Designing Exploration Foundation (NEERI), Nagpur is given to research and developments in ecological science and building other than taking care of the scope of issues presented by industry, government, and public.

Hence, the correct answer is option (A).

Note: NEERI states its command as to direct research and formative investigations in natural science and designing. To deliver help to the ventures of the area, neighborhood bodies, and so forth in tackling the issues of natural contamination. To cooperate and team up with scholarly and research establishments on natural science and building for shared advantage. To partake in CSIR push region and mission ventures.