A decision is unanimous when every member of the group that is deciding agrees to it. Class 8B has 40 students, and they are voting on where to go for the class trip. Which of the following situations is the best example of a unanimous decision?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → All 40 students of Class 8B vote for the science museum, and nobody votes for any other place.
A unanimous decision has one test: every member of the deciding group, here all 40 students, agrees to it.
In Option (4) all 40 students vote for the science museum and nobody votes otherwise. The test is met.
Why the other options are incorrect
Option (1) 35 students of Class 8B vote for the science museum and 5 vote for the zoo, so the class goes to the science museum. — Incorrect. 5 students do not agree, so the decision is taken by a majority, not by every member.
Option (2) The class teacher decides alone that Class 8B will go to the science museum, without asking the students. — Incorrect. The teacher alone decides; the students of the group are not asked and do not agree to anything.
Option (3) 39 students of Class 8B vote for the science museum and one votes for the planetarium. — Incorrect. One student does not agree, so not every member agrees.