The answer choices are not provided, so I cannot select the correct one. However, I may provide you examples and guidance on how to choose the correct one. As mentioned in the explanation, a scientific question must have a variable that is changed, the independent variable, and a variable on which the effect of the change is measured. This is the dependent variable. Examples of such questions include:
How will the amount of water given to a plant affect its rate of growth? What will be the amount of sugar that can be dissolved in water at a given temperature? At what temperature will a balloon filled with air pop?
All of these questions may be tested using experiments.
Flying foxes disperse the Cycad seeds if the seed sometimes get swallowed whole.
Explanation:
Cycads are gymnosperms they do not have seeds enclosed in fruit. Therefore the bats are not attracted to cycad fruit.
If the bats were susceptible to neurotoxin then they must not have been the frequent feeders of cycad seeds. Biomagnification of neurotoxin in flying fox is a widely researched topic.
Beetles do not have an association with these bats thus the bats must not be assisting them as important pollinating agents.
