Option (b) is correct

For State x :-

Solar = (28-20)/20 x 100 = 40%

Wind = (15-10)/10 x 100 = 50%

Coal = (42-40)/40 x 100 = 5%

For State y :-

Solar = (20-15)/15 x 100 = 33.3%

Wind = (10-8)/8 x 100 = 25%

Coal = (55-50)/50 x 100 = 10%

Hence percentage decadal growth is maximum for wind in state x

विकल्प (b) सही है

राज्य x के लिए:-

सौर = (28-20)/20× 100 = 40%

पवन = (15-10)/10× 100 = 50%

कोयला = (42-40)/40× 100 = 5%

राज्य के लिए:-

सौर = (20-15)/15× 100 = 33.3%

पवन = (10-8)/8× 100 = 25%

कोयला = (55-50)/50× 100 = 10%

इसलिए दशकीय वृद्धि (प्रतिशत) राज्य x में पवन के लिए अधिकतम है