The correct options are
A 350 students prefer to travel by bus.
B Cycle is the least preferred mode of transport.
We can observe from the graph:
Number of students using car = 250
Number of students using bike = 425
Number of students using bus = 350
Number of students using metro = 450
Number of students using cycle = 225
So, option A is correct. Also, cycle has the least frequency. So option B is also correct.
The frequency of metro is higher than the frequency of bike. So, option C is incorrect.
Also, D is incorrect as car doesn't have the highest frequency.