1. **Eyes:** The eyebrows are slightly raised, and the eyes seem widened. The skin between the eyebrows and eyes appears to be slightly wrinkled, indicating surprise or fear. The widened eyes can be associated with alertness or shock.

2. **Mouth and Nose:** The lips are pressed together, which can indicate tension or uncertainty. The nasal flare isn't clearly visible, but if there were any, it could suggest heightened emotions or arousal.

3. **Hands:** The hands are placed over the face, with fingers spread out and covering a large portion of the cheeks and the area between the nose and upper lip. The hands' positioning suggests an overwhelming emotion, possibly to hide one's emotions, or as a reaction to shock, disbelief, or embarrassment.

4. **Posture:** The slight forward lean and the positioning of the arms suggest a more defensive or protective stance, as if shielding oneself from external factors.

5. **Facial Muscles:** There doesn’t seem to be any tension in the jawline or temples, suggesting that while the emotion is strong, it's not necessarily rooted in anger or frustration.

Based on the observed cues:
- The primary emotions seem to be **surprise or shock** coupled with **uncertainty or tension**. The widened eyes and slightly raised eyebrows are strong indicators of surprise, while the pressed lips and hand placement suggest an element of tension or the need for self-comfort.
- It's challenging to determine the authenticity of the emotion solely from a still image, as genuine emotion and acted emotion can look very similar in a single snapshot. However, the fact that the hands cover such a significant portion of the face might suggest a genuine reaction to a surprising or shocking event. If the person were trying to convey an emotion for the benefit of others or was acting, the face would typically be more visible to clearly communicate the emotion to onlookers.