The correct answer is D. There may be other factors affecting whether she coughs.
Explanation:
In general terms, two or more events occurring at the same time or nearly at the same time do not necessarily imply they are related or one causes the other. Indeed, considering that one event is the cause of another just because it occurs at the same time is a type of logical fallacy. This implies, in the case of Alyssa it is wrong to assume her cough and the sun are related because two events that occur at the same time are not necessarily connected and therefore in this case "there may be other factors affecting whether she coughs" which disproves the idea that both events are directly linked.
