What is the average weight of a male heart?

The average weight of a male heart typically ranges from about 250 to 350 grams, with many references commonly citing it around 300 grams. This places it well within the range of the choice identified. A heart weighing around 0.3 kg closely aligns with established medical literature, indicating that it is within the normative range for male hearts. Choosing this option reflects a good understanding of typical anatomical values in cardiology, which is critical for anyone involved in cardiac care or research.