There are 2 different words and 1 different punctuation mark between Sentence A and Sentence B. The words differ in verb form and plurality, while the punctuation difference involves a missing comma. This affects both the grammatical accuracy and the clarity of Sentence B.
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To determine how many words and punctuation marks are different between Sentence A and Sentence B, let's compare them closely.
Sentence A: Gathering detailed customer feedback after project completion helps us identify areas for improvement, refine our processes, and enhance future client engagements.
Sentence B: Gathering detailed customer feedback after project completion help us identify areas for improvement refine our processes, and enhance future client engagement.
The word 'helps' in Sentence A is different from 'help' in Sentence B. That's one word difference.
Sentence A has an additional comma after the word 'improvement' which is absent in Sentence B. That's one punctuation mark difference.
The word 'engagements' from Sentence A differs from 'engagement' in Sentence B, which is another word difference.
In total, there are 3 differences: 2 words ('helps' vs. 'help' and 'engagements' vs. 'engagement') and 1 punctuation mark (a comma after 'improvement').