For most of the school year the number of disciplinary actions taken weekly because of student misconduct at North High School has remained about the same—roughly ten a week. But for the last month the number of actions per week has gone down considerably—to about six per week. There can be only one reason: Last month the Ten Commandments were posted in the hallway outside the principal's office. This posting was the only significant recent change in the school.

Explanation:

This change can definitely be the reason for the drop in the numbers of disciplinary actions taken in the school. The drop can be attributed to the fact that, the students were able to see the commandments or the law which govern their behaviors. So, even if a student was not aware of the law before, he is now. And also, by seeing the commandment daily, there is like a message being passed to the subconscious memory which then guides the students anytime they may want to misbehave. Seeing the commandment almost everyday is serving as a remainder to the students that there are laid down principles and guideline which govern their stay in the school, and breaking these rules will result in disciplinary actions against them.

b. they require a huge investment of time, dedication ,training, and patience almost from the day they are born.

explanation:

the sentence gives a clear evidence of how carefully the sar dogs are selected and also specify from what time this exercise begins."almost from the day they are are born." this sentence shows as that this exercise begins early.

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