What is one technique that can a photojournalist capture a great candid photograph? always use manual focus. anticipate what might happen. make sure to introduce yourself to everyone. all of the above.

Manual focus might or might not be important. Very few subjects give you time to photograph them. 

Anticipation is a good answer. Mosts sports photos are taken because the cameraman/woman is either a good editor or he/she understands the game well enough to know what will happen.

I don't know that people have to know who you are especially if you are taking pictures of animals or vegetation. 

I have enough doubt that you can't pick the last one. So B.

You look through the lens