Final answer:
The alliteration in this chapter is seen in the line 'Grendel growled', highlighting the monstrous nature of Grendel.
Step-by-step explanation:
In this chapter, the example of alliteration is seen in the line 'Grendel growled'. The alliteration of the 'g' sound emphasizes the monstrous nature of Grendel and helps create a sense of fear and foreboding.