Final answer:
The title for a knight commander in the Royal Order of Kalakau is 'Knight Commander', distinct from the more general 'Sir' or 'Dame', and is not to be confused with 'Grand Master', which is a higher rank.
Step-by-step explanation:
The correct title for a knight commander in the Royal Order of Kalakau is Knight Commander. While 'Sir' and 'Dame' are titles commonly associated with knighthood, these generally refer to individuals who have been knighted in a broader sense and may not specifically indicate the rank within an order. 'Grand Master' is a title typically reserved for the head of an order, who oversees the entire organization, rather than an individual rank within the order itself.