The correct answer is D Fish ( someone asked me to explain why d is the answer) A sponge obviously doesn’t have a brain, a hydra is an organism and organisms don’t have brains ( hydra also doesn’t have eyes)
        
                    
             
        
        
        
Answer:
can you pls gikve me math answerss
Explanation:
 
        
             
        
        
        
<span>Hiking in the morning, assuming you have not eaten anything prior to the hike, results in your body having to perform work with lowered glucose levels, thus causing the body to feel out of breath.</span>
        
             
        
        
        
The outer core<span> of the Earth is a fluid layer about 2,300 km thick and composed of mostly iron and nickel. It that lies above Earth's solid inner </span>core<span> and below its mantle. </span>