The correct answer is (a) True.
In Time Division Multiplexing (TDM), different signals are transmitted in distinct time slots within a single transmission channel. Each time slot is allocated to a particular signal (or sample), and these samples occupy adjacent time slots in a cyclic manner. The signals are transmitted sequentially, and each sample uses the full bandwidth of the channel during its allotted time slot. This allows multiple signals to share the same transmission medium without interfering with each other, as they are separated by time.
In summary, TDM works by dividing the time into discrete slots and assigning each time slot to a different signal, meaning the samples do occupy adjacent time slots, which is why the statement is True.