Select from the following.
 a). not enough information.
 b). on the boat in Steveston.
 c). South of Vancouver.
 d). San Juan Islands.

The sighting of a killer whale (or orca) can be rare, but they do love to hunt and play in the waters between Vancouver and Seattle, so one of the activities we absolutely wanted to do (in addition to the harbour seaplane flight) was to go whale watching. Just South of Vancouver, in the quaint Historic fishing village of Steveston we hopped aboard our boat, and spent the day on the water cruising the coast looking for whales, other marine mammals and seabirds. The regular chug-chug-chug of the boat motor for a couple of hours lulled me into a meditate state as we sped our way over the State line from Vancouver, back down to the waters of Washington State. The shimmer of the water all dappled in the sunlight, the slow, measured tones of our guide and snuggling into my warm jacket against the sharp breeze off the coast was just enough to make me forget my worries, and zone out from all of my modern day dilemmas. Honestly, it needs to be prescribed on the NHS. Forget hauling yoga mats and sitting in sweaty concrete rooms with patterns trying to hide the utilitarian backdrop, just hop on a boat out from Vancouver. Not having much success closer to the British Columbia shores, our captain decided to head south past the Canadian/American border. Incredibly, the resident killer whales of the San Juan Islands are the most studied whales in the world; they, in turn, have observed humans for at least six thousand years. Stable family groups, called pods, represent several generations and include grandmothers (the pod leaders), adolescents, infants, and huge bulls. Each family member is recognized by its distinctive markings and can live as long as a human. Much of what is known about the orca whale’s highly-organized social life has been learned from the resident pods in the San Juan Islands of Washington. Question: Where are the killer whales most studied? === The answer to the above question is
Answer:
d).