Select the most appropriate option to fill in the blank.

This is one of the _____ remarkable cases I have handled.

most

The most appropriate option to fill in the blank is:

☀ most

The sentence would read: "This is one of the most remarkable cases I have handled."

Explanation: "Most" is the superlative form of the adjective "remarkable," which is used to compare one item against all others in a category. The other options don't fit the context:

• More: This is used for comparisons between two items, not to indicate the highest level of comparison.

• Much more: This is also used for comparisons between two items, and the word "much" is not necessary here.

• Much: This is used for comparisons between two items or for emphasizing degree, but it's not used to indicate the superlative form.