From the details given, what can be inferred about Sam regarding dogs?

The inference that Sam is allergic to dogs suggests a specific reaction he has towards them, which would likely cause discomfort or a need to avoid being around them. This option implies that Sam's relationship with dogs is affected by a medical condition, leading him to possibly distance himself from them for health reasons.

In contrast, the other choices provide different contexts or attributes about Sam that do not necessarily connect to his feelings about dogs. For instance, being scared of dogs suggests fear rather than an allergy, while being scared to stay at Josh's house after dark implies a broader fear rather than a direct relation to dogs. Additionally, not liking Josh hints at a personal dynamic rather than an allergy or fear concerning dogs specifically. Thus, the inference that Sam is allergic centers on a clear and plausible reason for him to avoid dogs.