does 'quod' mean 'because' here or is it a relative pronoun? 59.3

[Phoebus Apollo]

simus ergo, quod melius est, a primitiis hilares et Homeristas spectemus.

I'm tempted to translate it as 'because', but 'which is better' could work as well... no commentaries that I've read seem to explain this so help would be appreciated!

 

[Dantius]

Seems like a relative pronoun here. "which is better".

 

[Phoebus Apollo]

Seems like a relative pronoun here. "which is better".

Thanks