Remora fish get free food by hanging out with sharks. Sharks are not affected by
the remora. Which type of symbiotic relationship is this? *

This is a symbiotic relationship of commensalism

Explanation:

Commensalism is when one animal in a symbiotic relationship gets something out of the relationship without harming or benefiting the other. If the fish were to be helping the shark, it would be mutualism (since they both get something out of the relationship). If the fish were to be harming the shark it would be a parasitic relationship. Since the fish is neither hurting or aiding the shark, it is a commensalistic symbiotic relationship!

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the answer is d. chordata