Correct answer is:
B. After sampling a few cake samples, the bride picked up the best flavor.
This option is the one that is being more effective in delivering a message with the least use of words. If you pay attention, it is delivering the exact same message as the original text but is not being repetitive in the sense that is not using words or terms that are similar to each other, which the other options do.
Repetition is great when the intent of the writer is to emphasize something within the text, but it had to be done carefully, otherwise is just a mistake that makes the reading experience a little bit clumsy. It is actually a very common mistake for the not so experienced writer, but nothing to worry about, there are many tips out there to avoid being repetitive, like reading what you wrote several times and trying to think if it could be said in an easier to understand way or really identifying when words that you are using are referring to the same concept and eliminate as necessary.