Pretty sure it’s option #2, syllabic meter. If I get it wrong my bad!!
D) For oft, when on my couch I lie
In vacant or in pensive mood,
They flash upon that inward eye
Which is the bliss of solitude;
And then my heart with pleasure fills
Answer: removing part of the end of a word to form a new word
Explanation: I had this same question and i got it right
"to" because too is when there's too much of something
