Select the most appropriate word to fill in the blank and make a meaningful sentence.

Winning both the races has been a ________ surprise, but the success is well deserved.

pleasant

The most appropriate word to fill in the blank and make a meaningful sentence is:pleasant

The corrected sentence would be: "Winning both the races has been a pleasant surprise, but the success is well deserved."

Explanation:
In this context, "pleasant" fits well to describe the surprise as something enjoyable or agreeable. It suggests that the surprise of winning both races brought about positive emotions. Therefore, "pleasant" is the most suitable word in this context.

1. Satisfying: This word means fulfilling or gratifying. While winning both races might indeed be satisfying, it doesn't capture the element of surprise conveyed by the sentence.

2. Pleasant: This word means enjoyable or agreeable. In the context of the sentence, winning both races being a "pleasant surprise" suggests that it brought about positive emotions. This fits well with the idea that the success was unexpected but welcome.

3. Civilized: This word means polite or refined in behavior or manners. However, it doesn't fit in the context of the sentence, which is discussing the nature of the surprise rather than the behavior of the individuals involved.

4. Charming: This word means delightful or attractive. While winning both races might indeed be charming in some contexts, it doesn't fully capture the surprise element conveyed by the sentence.