Which method is better for preparing a group presentation: working online and through email, or meeting in person regularly?

问题

In one of your classes, you have been assigned to do a final group presentation with a few classmates. One of your classmates proposes that the group do all the work of preparing for the presentation online and through e-mail. Another classmate proposes that the group instead should meet in person regularly. Which option do you think is better to prepare for the group presentation? Explain why.