The graph shows the population sizes of bush babies and spider monkeys in a tropical rain forest between 2015 and 2019 - Scottish Highers Biology - Question 24 - 2023

To verify this statement, we can look at the bar heights for both species in the year 2015 from the graph. The population size for spider monkeys in 2015 appears to be approximately 150 while that of bush babies is around 60. To see if the spider monkey population is indeed 2.5 times that of bush babies, we calculate:

$2.5 imes 60 = 150$

This confirms that the population of spider monkeys in 2015 was indeed 2.5 times greater than that of bush babies. Thus, option C is supported by the data.