(i) Terrestrial flora and fauna of the area is destroyed completely

(ii) Dislocation of people and domestic animals living in the area

(iii) Valuable agricultural land may be permanently lost

(iv) It will generate permanent employment for people

(a) (i) and (ii)

(b) (i), (ii) and (iii)

(c) (ii) and (iv)

(d) (i), (iii) and (iv)

Correct option –( d )

Explanation – the heights of the dams are increased so as to store more water in it , by which more electricity can be produced . It has its own advantages and disadvantages .

Advantage is that the people of that will get employment by it . Disadvantage will be the flora and fauna of that region will be destroyed completely which will be a great a loss to the nature . Also the precious land for agriculture will be lost permanently