If you’re asked about a sequence from a text in a critical essay question…

If you’re asked about a particular sequence in a critical essay question…

You would usually discuss the significance of the key incident / key scene (for example, Gatsby’s reunion with Daisy) and this would include discussion of the sequence’s significance in terms of character development, plot, symbolism and of course theme / central concerns.  What do the characters do and say? What do these actions and words signify?  What elements of the setting are symbolic (the clock that Gatsby almost knocks over?).  Setting might be important in a key passage or sequence.
You would usually be expected to relate the sequence to your understanding of the whole novel or play’s central concerns/theme/s.  And usually you would at first discuss the context of the sequence (what leads to it?) and then at appropriate points you would discuss the consequences of the sequence for the characters / plot.

Scroll down to recent posts for examples of answers to questions like this in the drama section. 🙂

Keep going, gang.  You can do it.

MrT