Regarding anatomy, which areas are reproduced in a mandibular impression?

The correct choice focuses on the specific anatomical structures relevant to a mandibular impression. In the context of dental assisting, capturing an accurate representation of the mandibular dentition and surrounding tissues is vital for creating dentures, orthodontic appliances, and other dental work.

The retromolar area, lingual frenum, tongue space, and mylohyoid ridge are anatomical landmarks that are essential to capture in a mandibular impression. The retromolar area provides support for mandibular dentures and is essential for proper fit and function. The lingual frenum influences the movement and positioning of the tongue, which is crucial for functions like speech and swallowing. The tongue space must be accurately captured to ensure that devices do not interfere with the tongue's natural movement. Lastly, the mylohyoid ridge serves as a landmark for identifying the boundaries of the impression and ensuring that the appliance fits appropriately.

Other options provided either refer to areas more relevant to maxillary impressions, broadly address both arches, or focus solely on the teeth, which would not include the necessary surrounding anatomical structures that impact fit and function. This distinction is what solidifies option B as the most accurate response for capturing the necessary anatomy in a mandibular impression.