The Heinrich layers likely developed when option D: Times of low ocean pH.
What are Heinrich layers?
Heinrich layers are known to be a kind of North Atlantic sediments that is known to be composed of a high volume of debris that is said to be often carried by ice.
Note that the Heinrich layer is seen as a physical depiction of a Heinrich event that has been kept in a marine sediment core. A Heinrich stadial is seen as the cold era that is made up of the Heinrich event.
Therefore, based on the case above, the Heinrich layers likely developed when option D: Times of low ocean pH and at this time, it grows rapidly.
Learn more about ocean pH from
https://brainly.com/question/14822911
#SPJ1
