Complete the paragraph given below by filling in the blanks with the help of options that follow :
The rapid changes that India (a) ............ over the last few decades have been welcomed by (b) ........... . It is (c) ............ enthusiasm which (d) ............ .
(a) (i) is enduring (ii) was endured (iii) has been enduring (iv) will endure
(b) (i) most of us (ii) many of them (iii) few of people (iv) the lot of people
(c) (i) a (ii) the (iii) an (iv) that
(d) (i) should be kept alive (ii) have been kept alive (iii) will be keeping alive (iv) will be enlivened