A student investigated the effect of temperature on the rate of decay of vegetable waste over a 30-day period. The results are shown in the table below.
| Temperature in °C | Mass of waste in g (at start) | Mass of waste in g (after 30 days) | Decrease in mass in g | Percentage decrease in mass (%) |
|---|---|---|---|---|
| 15 | 10.0 | 9.2 | 0.8 | 8.0 |
| 30 | 10.0 | 7.5 | 2.5 | 25.0 |
| 45 | 10.0 | 5.8 | 4.2 | 42.0 |
| 60 | 10.0 | 4.5 | 5.5 | 55.0 |
| 75 | 10.0 | 8.8 | 1.2 | 12.0 |
Explain which temperature was the best for the decomposition of the vegetable waste.