He's not upset because they want to know if they're right, he's upset because they just grab some options, throw them together, and check with him. There's no thought going into it and I'm sure if you ask the kids why they chose the locations they did, they'll have no response.
I recently graded some of the math final tests for my wife's second grade class, and the students who are doing well all did well because they extracted the parts from the problem that were required (even simple things like how many jugs of milk are shown below), while the students with a history of not doing so good in math instead picked numbers off the paper and either added or subtracted them, assuming they just needed an answer. There was no thought about the process, just the end result. Got some numbers? Good enough.
I recently graded some of the math final tests for my wife's second grade class, and the students who are doing well all did well because they extracted the parts from the problem that were required (even simple things like how many jugs of milk are shown below), while the students with a history of not doing so good in math instead picked numbers off the paper and either added or subtracted them, assuming they just needed an answer. There was no thought about the process, just the end result. Got some numbers? Good enough.