To celebrate her 50th birthday, anna got her ear pierced in the elastic cartilage portion (pinna). the piercing specialist informed her that it will take at least 6 weeks to heal. this is because

The correct answer is - cartilages are avascular or have no blood vessels in it so it takes longer to heal after an injury or piercing.

Explanation:

Pinna is the portion of the ear that is the portion that is basically an elastic cartilage tissue. Cartilages are the tissue that is the tissue that does not have their own blood supply as they lack blood vessels.

Lack of blood cells in these tissue cause slow healing in the cartilages that is why piercing specialist told her it will take 6 weeks time to heal.

Thus, the correct answer - cartilages are avascular or have no blood vessels in it so it takes longer to heal.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.