Article: Spring is coming, spring is coming, Birdies, build your nest; Weave   together straw and feather, Doing each your best. Spring is coming, spring is coming, Flowers are coming too: Pansies, lilies, daffodillies Now are coming through. Spring is coming, spring is coming, All around is _ , Shimmer   and quiver   on the river, Joy is everywhere. ----William Blake 
 Question: The poet felt   _   when he was writing the poem. 
 Options: (A) surprised (B) lonely (C) happy (D) sad
C