A.science and technology
Science and technology is the correct option. Science include the knowledge of the natural processes and events that occur in the universe. It includes the predictions and explanations for the cause of natural processes. The technology include the collection or group of techniques and methods can be used for the synthesis of goods and services. The technology can be used for the accomplishment of objectives and for the purpose of scientific investigations.
The knowledge of science can be used and implemented to develop the technology. The technology can be used for the synthesis of new things and solving the problems associated with the daily life.
for gradpoint the answer is conservation and research~