D.by importing or developing innovative technologies
Physical capital applies to circumstances of production that subsist in a material way and could participate in the improvement of the effectiveness of commercial operation which is conducted out by the nation. Although the development of substantial training and the enhancement of food nutrition could be deemed as an expenditure, However, it does not directly involve in the expansion of the physical capital.
B is the answer. Dry raisins swell up because they undergo Endosmosis. When a rasin is put in water then the water passes through the semipermeable membrane
