Which research is done when a researcher needs solution to a problem

Which research is done when a researcher needs solution to a problem
A: Scientific research
B: Applied research
C: Descriptive research
D: Basic research

Applied research focuses on solving practical problems. It uses scientific methods but aims for direct application in real life. For example developing a vaccine for a disease is applied research. In contrast basic research expands knowledge without immediate use. Applied research is vital for industries business and technology as it helps in creating solutions products and policies that benefit society.