Answer:
The best option is indeed assonance.
Step-by-step explanation:
In the first line of the excerpt we are analyzing here, the words "my", "eyes", "I", and "line" present the same vowel sound. That constitutes assonance.
Alliteration is the use of the same consonant sound in the beginning of words that are subsequent to each other - she sells seashells by the shore, for instance.
Consonance is also the repetition of a consonant sound, but not necessarily in the beginning of the words.
Finally, repetition is a device in which the same words or phrases are repeated a number of times, usually with the intention of causing some impression on the reader.