What is an Explanation for the Pectoral or Breast Meat

Question

What is an explanation for the pectoral or breast meat of ducks being very dark in colour?
A) Ducks employ intermediate muscle fibres for swimming and flying.
B) Ducks use their wings for very short flights and need fast muscle fibres to power their take- offs.
C) Ducks fly long distances and need myoglobin- rich slow muscle fibres to power high- endurance flights.
D) Ducks are primarily swimmers and therefore do not need breast muscles full of "white meat."

Accepted Answer

Ducks are known for their migratory behavior, flying long distances during migration. This requires a lot of energy and endurance, which is powered by slow muscle fibers rich in myoglobin. Myoglobin is a protein that stores oxygen in muscles, giving them a dark color. Therefore, the pectoral or breast meat of ducks is dark in color due to the presence of myoglobin-rich slow muscle fibers.