Which treatment is recommended for a venomous spider bite?

The recommended treatment for a venomous spider bite involves keeping the person warm and reassured. When someone suffers from a spider bite, especially from a venomous spider, it's crucial to ensure they feel calm and secure, as this can help prevent shock and anxiety, which can exacerbate symptoms.

Maintaining warmth is important because it aids in circulation and can help the body to manage the effects of the venom more effectively. Reassurance helps to alleviate fear and stress, which can contribute to an overall better response to the situation.

The other options, while they may suggest actions focused on comfort, do not align with the appropriate response to a venomous bite. Keeping the person cool and isolated might lead to unnecessary stress, as isolation can increase feelings of panic. Applying heat could worsen symptoms, as it might exacerbate swelling or pain associated with the venom. Encouraging someone to run could increase their heart rate and potentially lead to faster spread of the venom, which is not advisable in this situation.