The correct option is B What is the weight of all the members of the council?
Statistical questions are those in which the answer can be given by collecting the data and there should be variability in the data.
In option (a) the height of single person is asked, and there is no variability. Hence, it is not a statistical question.
Similarly in option (c) salary of one person is asked.
But, in option (b), we have to collect the data of all the members of the council and all members will have different weight, hence there will be variability in the data.
So, the question in option (b) is statistical question.
Hence, option (b) is correct.