Answer:
C. basic research
Explanation:
Research and development (R&D) is a term used in the industrial and manufacturing world to include all the processes through which Organisations obtain information and data needed in order to improve an existing product or add a new product or service.
BASIC RESEARCH IS A RESEARCH PROCEDURE ADOPTED IN RESEARCH AND DEVELOPMENT TO GAIN THE ADEQUATE INFORMATION OR DATA WHICH ARE NEEDED TO MAKE CERTAIN IMPROVEMENTS BUT ARE NOT URGENTLY OR IMMEDIATELY REQUIRED FOR COMMERCIAL IMPLEMENTION.