B would be your answer, let me know your scores.
Total number of different committees = C(14,6) = N
We have two cases where we have less than 2 teachers.
case 1: 1 teacher (out of 5)
Number of ways to choose 1 teacher = C(5,1) = 5
Number of ways to choose the remaining members from students = C(9,5)
Total number of ways to choose a committee with exactly 1 teacher = 5C(9,5) = N1
case 2: no teacher
Number of ways to choose 6 students = C(9,6) = N2
Probability to choose at least two teachers
= (N-N1-N2)/N
=109/143
I hope tmy answer helps you
<h2>
Answer:</h2>
<u>Biology is the branch of science.</u>
<u>Human biology is the branch of biology that focuses on human beings and hum</u>an <u>pop</u><u>ulation. </u>
<u>Social</u><u> </u><u>biology</u><u> </u><u>is</u><u> </u><u>the</u><u> </u><u>branch</u><u> </u><u>of</u><u> </u><u>biology</u><u> </u><u>that</u><u> </u><u>is</u><u> </u><u>the</u><u> </u><u>study</u><u> </u><u>of</u><u> </u><u>s</u><u>o</u><u>c</u><u>i</u><u>a</u><u>l</u><u> </u><u>behaviour</u><u> </u><u>of</u><u> </u><u>animal</u><u> </u><u>and</u><u> </u><u>human</u><u>. </u>