1-a,2-d,3-b those are my answer
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.
Answer: group b may be more pleased with another look and that tricks there brain
Explanation:
sometimes just a change of look may change your view of the food