Which of the following transitional expressions should a student use to show sequence?

The correct transitional expression to show sequence is 'Furthermore.' When a student uses 'Furthermore,' they are indicating an additional point or progression, making it suitable for showing a sequence of events or ideas. On the other hand, 'Nevertheless' indicates contrast or opposition, 'Similarly' suggests similarity, and 'Elsewhere' refers to a different place or direction, making them unsuitable for showing sequence. Thus, 'Furthermore' is the most appropriate transitional expression to demonstrate a sequence of events or ideas in writing.