Final answer:
Naheed and Eliza needed blindfolds and earplugs for their sensitivity experiment. So, the correct option is C) Blindfolds and earplugs.
Step-by-step explanation:
The supplies that Naheed and Eliza needed to do their sensitivity experiment were blindfolds and earplugs. These supplies are used to restrict and block certain sensory information, allowing them to focus on other senses and explore the effects of sensory deprivation in their experiment.
With blindfolds, they would be able to block their vision and rely on other senses like touch and hearing, while earplugs would restrict their sense of hearing, forcing them to rely on their other senses.