Calvin's professor can conclude that Calvin has been an observational kid.
Explanation:
The observation Calvin makes is a rather arbitrary one but one that can invite broader concern nonetheless.
Some kids start bobbing their heads and raising them before they can ever turn while the other develop these skills in the opposite order.
It would remain to be seen if Calvin would think something can be inferred from this otherwise rather standalone observation of things or not as there may be a study on how far this can be taken in child psychology.
At any rate, he is an observational student and the professor can put that to use.
The answer in the item above is: B. Robberies are considered to be either professional or amateur. Professional robberies are well thought planned and has been consistently making money or earning a living as a robber. The amateur robberies are those who are not really earning it as a living and are not consistent in committing the crime. Usually, they would go for banks.
