Question

the presence of a halo, a ring of light encircling and extending outward from the sun or moon, indicates which type of clouds are present?
a. cirrus
b. altocumulus
c. stratus
d. cumulus

Explanation:

Haloes are formed by the refraction of light through ice - crystals in cirrus clouds. Cirrus clouds are high - altitude clouds made of ice crystals. Altocumulus are mid - level clouds, stratus are low - level clouds, and nimbus are rain - bearing clouds. None of these typically cause halos.

Answer:

a. cirrus