$4.$ Which problem, if observed in a team, is HARDEST to associate with team size for teams that are too large?

a$.$ Common information effect is stronger and more present

b$.$ Team fragmentation $($internal breakdown into sub$-$groups$)$

c$.$ Team sub$-$optimization $($losing site of the organization's goal at the expense of the team goal$)$

d$.$ Personal Conflict has a better chance to emerge $($Effective intervention will be more difficult$)$