Two OSPF neighbors on a crossover Ethernet link are slow to reach FULL. Which interface command reduces adjacency formation time?

The ip ospf network point-to-point command is correct because it changes the OSPF network type to point-to-point. On point-to-point links, OSPF does not need to elect a Designated Router (DR) or Backup Designated Router (BDR), which significantly speeds up adjacency formation by eliminating the DR/BDR election process and associated timers. ip ospf dead-interval 40 modifies the dead timer, but does not directly speed up the initial adjacency formation; it affects how long a router waits for Hellos before declaring a neighbor down. ip ospf network broadcast would maintain the default broadcast network type, requiring DR/BDR election, which is slower. ip ospf priority 0 would prevent the router from becoming a DR/BDR, but it still requires the election process to occur, thus not speeding up initial adjacency formation on a broadcast segment.