Wind is an inexhaustible source of energy and aerogenerator can convert it into electricity. Through not much has
so far been done in this field, the survey shows that there is a vast potential for developing wind as an alternative
source of energy. The wind survey has four components -- direction, duration, speed and distribution.
On this basis U P. hill areas have been found an ideal place for setting up aerogenerators. In U.P. hills alone, as
many as 58 sites have been identified.
Energy by wind is a comparatively new emerging field.
Answer: C
In the passage, it is given that not much has been done in the field of wind energy and efforts are on. Thus, it is clear that wind energy is a comparatively new emerging field.