Final answer:
Based on the positive correlation between temperature and the speed of sound, and the accepted speeds at known temperatures, it's more likely that the speed of sound at 50°C will be closer to 365 m/s.
Step-by-step explanation:
The question asks about predicting the speed of sound at a particular temperature based on a scatterplot. To determine the speed of sound at 50°C, one would typically look for a trend in the scatterplot data and use it to extrapolate the speed at the given temperature. As the speed of sound increases with temperature, and given the information that the speed of sound at 0°C is 331 m/s and at 20°C is 343 m/s, we can infer a positive correlation between temperature and the speed of sound. Unfortunately, without the actual scatterplot or a mathematical model provided in the question, we cannot give an exact value. However, if we consider the general trend that the speed of sound increases with the square root of temperature, we might expect the speed of sound at 50°C to be higher than at 20°C, thus, options C (360 m/s) and D (365 m/s) could be more likely than options A (350 m/s) and B (355 m/s). Additionally, knowing the accepted speed of sound at room temperature (approximately 20°C) is 346 m/s, and assuming a linear increase, one might predict a speed closer to option D (365 m/s) at 50°C.