For number 1, your option is correct (B). "Doggedly" is synonymous with "persistent," so "with great determination" matches that.
For number 2, your option is correct (D). "Stoutly" means "strong" and "sturdy," so "solid" would also work.
For number 3, your option is incorrect. The correct answer is B. "Boisterous" and "rowdy" both mean energetic and noisy. Since the children were bouncing off the walls, they were indeed energetic, boisterous, and rowdy.
The second option is the correct option.
When using the word “I” in situations like this, it must be capitalized.
The correct answer is B. He is cruel. Grendel is introduced as a bloodthirsty, evil monster. He is a lonely creature who seeks an understanding of the seemingly meaningless world around him. He kills men consistently in the town's mead-hall, ripping them apart. Grendel is shown as evil because he kills passionately.
By tying all the information together
A. Many voters registard for the election