Answer:
Three parts of the excerpt that show the creature's innocence and helplessness like a newborn child are:
1. "A strange multiplicity of sensations seized me..." - This portrays the overwhelming experience of new sensations, much like a newborn encountering the world for the first time.
2. "...I was obliged to shut my eyes." - Closing its eyes due to the intensity of light suggests a vulnerability and the need to shield itself from overwhelming stimuli, similar to a newborn's instinctive response.
3. "I was a poor, helpless, miserable wretch..." - This statement directly conveys the creature's sense of helplessness and vulnerability, akin to a newborn who relies entirely on others for care and protection.