Final answer:
The correct phraseology for contacting Whitted ATC tower with callsign HAWK N666CB is to state the tower's name, the aircraft's callsign, location, and request to enter Class D airspace, as given in the first option.
Step-by-step explanation:
The proper phraseology for initial contact with Whitted ATC tower while flying HAWK N666CB would be the first option:
"Whitted Tower,
HAWK SIX SIX CHARLIE BRAVO
, five NM west of the airport,
request permission to enter Class D airspace
for unmanned aircraft operations below four hundred AGL, three NM west of the airport"
This includes all the necessary information for the ATC to identify your aircraft, your location, and your intentions clearly and concisely, as recommended by aviation communication protocols.