Answer:
Negative behaviors led administrators to introduce a dress code to promote a more disciplined environment.
gurkee the turkey
Explanation: problem first then solution, just got it right on e2020..
Either the students or their teacher <em><u>has</u></em> decided on the color of the new bulletin board.
When we use <em>either</em><em> </em>and there are two subjects, one of which is plural and another is singular, then we use the subject that is nearest to the verb. Here, <em>teacher</em> is nearest to the verb and it is singular. So, we will use <em>has</em>.
