Dante’s decision to invoke the muses is notable because
it reveals his contradictory nature
it reveals his respect for artistic tradition
it reveals his admiration of pre-christian religions
it reveals his interest in musical entertainment

It reveals his respect for artistic tradition.

Explanation:

Invoking of the muse is a tradition of poets and writers, as a symbol of starting their poems and also serving as a prologue for the events to come. This invocation is an address or prayer made to someone, normally one of the goddess of the Greco- Roman mythology.

Dante Alighieri also invoked the muses before he started writing or proceeding with his epic "Divine Comedy". This is notable not only because of the epic status it was meant to be, but also to show his respect for the artistic tradition that has been followed by many of the great writers before him. His decision to invoke the Muses is notable because it reveals his respect for artistic tradition and also his taking forward of this tradition.

faithful servants eumaeus and philaetius:

his ragged vest then drawn aside disclosed the sign conspicuous, and the scar exposed: eager they view'd, with joy they stood amazed with tearful eyes o'er all their master gazed:

these servants know ulysses by the scar he got when he was a child - so when he showed them the mark, they immediately knew this is truly their master and they hugged him, finally starting to believe his words.

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