The theme of this poem by Tagore is that A mind free from restrictions is a mind free to explore the truth, this is why in the ending he shouts: LET MY COUNTRY AWAKE. Since you need to be truly free in order to find truth. The right answer is the last option in part A.
Almost every line of this poem is a hint towards it's theme, <em>Where the mind is led foward by thee </em>is the one that best describes it, so the right answer for part B is the third option.
