MULTIPLE CHOICE QUESTION Why do scientists think that cuttlefish
have the biggest brain to body ratio of all
invertebrates (animals without a spine)?

Due to its high intelligence.

Explanation:

Scientists think that cuttlefish  have the biggest brain to body ratio of all  invertebrates that allows it to sense sight, smell, and sound that comes to it in the form of pressure waves. Due to this big brain, cuttlefish are very intelligent so due to its intelligence the scientists thinks that cuttlefish has the biggest brain as compared to other big vertebrates such as octopus.

it should be briana that has it to me

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.