Which survivorship curve should humans fall into and which curve do humans fall into?

The speed of  sound:   sound travels  at different speeds depending on what it istraveling through. of the three mediums (gas, liquid, and solid)  sound waves travel the slowest through  gases, faster  through  liquids, and fastest  through  solids.

Where’s the graph 0.0

Ithink the answer is d.

Ibelieve the answer is c.