A group of scientists wants to investigate if they can predict the life expectancy of mammal species given its average heart rate. The table below shows the relationship between average heart rate (in beats per minute) and life expectancy (in years) for a sample of mammals.
|Whale|Elephant|Horse|Lion|Sheep|Pig
:-- | --: | --: | --: | --: | --: | --: | --: | --: | --: | --:
**Average heart rate (BPM)** | $20$ | $30$ | $34$ | $50$ | $75$ | $95$
**Life expectancy (years)**| $70$ | $70$ | $40$ | $13$ | $15$ | $25$
**All of the scatter plots below display the data *correctly*, but which one of them displays the data *best*?**
*By convention, a good scatter plot uses a reasonable scale on both axes and puts the independent variable on the $x$-axis.*
[[☃ radio 1]]
$~~~$
$~~~$