Select the most appropriate option to fill in the blank and make a grammatically correct sentence.

I wasn’t feeling well yesterday, but I feel a little ________ today.

better

The most appropriate option to fill in the blank is better.

The word "better" is the comparative form of "good." It is used to compare two things that are not equal, and it means "to a greater degree of goodness." In this sentence, the speaker is comparing their health today to their health yesterday, and they are saying that they feel better today than they did yesterday.

The other options are not grammatically correct.

• More better is a double comparative, which is not grammatically correct.
• Best is the superlative form of "good." It is used to compare three or more things, and it means "to the greatest degree of goodness." In this sentence, the speaker is only comparing two things, so "best" is not the correct word to use.
• Good is the positive form of "good." It is not used to compare things, so it is not the correct word to use in this sentence.