Answer: Option 1, 4 and 6.
1. In which he tells about his innumerable combats he had won.
4. Also celebrates his fight with Grendel.
6. The speaker is showing us how valiant his action in the field of war can be.
Explanation:
Upside and downside can mean a positive and a negative aspect of something, respectively. However, none of the options here present a couple of something negative and something positive: so I think we need to use the local meaning. So our analogy is:
on one extreme of some location (on the upper side): on the other extreme.
Therefore the best other couple is outside and inside: they also show two opposite locations.
