Final answer:
Option b) Our meetings are regularly held at the Marriott next to the business school.
Step-by-step explanation:
Avoiding redundancy in a sentence is important for clear and concise communication. In this case, the sentence 'All of our regular meetings are at the Marriott next to the business school' can be revised to 'Our meetings are regularly held at the Marriott next to the business school.' This revision eliminates the repetition of 'regular' and 'meetings' while still providing the necessary information. Option b) correctly achieves this revision.