Question

"THERE'S A SENSE OF WARMTH WHEN MY THOUGHTS WANDER BACK TO THESE ORCHARDS OF MY YOUTH"

Answer 1

I would also say D ( it introduces the speaker's sense of fondness for the orchards)  is the answer because the original statement describes being in an orchard as  a pleasant experience instead of dull and uninteresting like A would suggest. B would not be the correct answer because of the adjectives used. C would also not be correct because the original statement doesn't describe what the orchard looked like.  

Hopefully this helped.

Answer 2

The answer should be D, because he says he feels a sense of warmness when he thinks about the orchards. Warmness is describing his emotions about the fondness of the orchard.