Fill in the blanks with the appropriate antonym of the word highlighted. The speed of the first speaker was monotonous when compared to the ____speech of the next. 

Explanation: Monotonous (highlighted word): In this context, "monotonous" describes something that is repetitive, unchanging, and lacking in variety. It often implies a lack of interest or excitement. Options: (a) Often: This option is unrelated to the concept of monotony. "Often" refers to frequency, not the lack of variety or interest. (b) Interesting: This is the correct word to fill in the blank. "Interesting" is the opposite of "monotonous," suggesting something engaging and captivating. (c) Boring: This is a synonym for "monotonous" and not the antonym. Both words convey a lack of interest or excitement. (d) Uneven: This option is unrelated to the concept of monotony. "Uneven" refers to irregularity or lack of smoothness.