Correct option is A
The correct answer is “CBAD”.
In the context of the sentence, the ecosystems with islands inhabited by lizards with shorter legs, there has been an observed decrease in the populations of web spiders by 41 percent. This phenomenon suggests a potential predator-prey relationship between the lizards and web spiders. The shorter-legged lizards may have an advantage in catching and consuming the web spiders, leading to a decline in their populations. This finding highlights the intricate dynamics of island ecosystems and the interplay between different species. It also emphasizes the role of natural selection and adaptation in shaping the distribution and abundance of organisms in specific environments. Further research is needed to understand the specific mechanisms driving this interaction and its broader ecological implications.
Thus, the correct sentence formed will be “On islands with shorter-legged lizards, populations of web spiders were found to be reduced by 41 per cent.”