Respuesta :
I think the answer is Cirrus. They are flat feathery clouds that usually stretch long distances over the sky.
Stratus –layered or sheet like, low (50 - 6500 feet)
Cumulus – puffy cotton balls, vertical development
Nimbus – dark and rainy
Cirrus – feather-like, high (20 000 feet)
Alto – medium altitude (6500 - 20 000 feet)