The designation of a certain period each day for team members to focus on their tasks without interruption is a good idea. The other responses are incorrect because although it sometimes can’t be avoided, working remotely is not a typical
option; even though cell phones are common and expected tools for organizational communication, a rule could be enacted to require team members to take phone calls out of the common area; scheduling cave time could be counterproductive
if members are removed at a time that’s inconvenient for them.