Select the most more appropriate option to fill in the blank.
He was__________ pertaining his innocence.

confidently

He was confidently pertaining his innocence.

Explanation:

• Shyly: This adverb describes an action done in a timid or bashful manner, which doesn't fit the context of confidently asserting one's innocence.
• Harshly: This adverb describes an action done in a severe or critical manner, which doesn't fit the context of asserting innocence.
• Confidently: This adverb accurately describes the manner in which he is asserting his innocence, with self-assurance and certainty.
• Quickly: This adverb describes the speed of an action, which isn't the main focus of the sentence. The emphasis is on how he is asserting his innocence, making "confidently" the most appropriate choice.