D. meeting one particular dog
A gerund phrase begins with a -ing word and then includes any modifiers and objects, so A, B and C are not the correct answers.
Answer:
"I put on my PLAID bathrobe..."
"was covered in DENSE fog."
"As I was trying to PROD the window closed..."
"I thought of the THREAT of..."
"...full of DREAD."
The last one ouch a connation is a feeling that adds to the meaning
Grendel is the antgonist/evil while Beowulf is the hero in the epic