Answer:
agility
Step-by-step explanation:
From the given options, the word 'agility' will be the most appropriate word to be used to complete the sentence.
Agility means the ability to make a movement in a quick and easy manner.
Acclaim means to claim certain thing and administer means to build a power over something.
In the given sentence, the diver's ability of quickly and easily moving has been highlighted. Therefore, agility will be used here.