What protocol/process in IPv6 replaces the IPv4 ARP process?

The Neighbor Discovery Protocol (NDP) uses Neighbor Solicitation (NS) and Neighbor Advertisement (NA) messages to look up an IP address from a MAC address through the use of multicast messages. Duplicate Address Detection (DAD) uses Neighbor and Neighbor Advertisement (NA) messages to check if another host has the same IPv6 address. Stateless Address Autoconfiguration (SLAAC) uses Router Solicitation (RS) and Router Advertisement (RA) to assign a network ID to a host. The ARP protocol is completely removed from IPv6; therefore, ARPv6 is not a valid option.