Definite article is used before a noun (person place or thing) to indicate that the identity of the noun is known to the reader.
indefinite article is used before a noun that is general or when its identity is not known.
Insulin lowers blood sugar from the body so that yôu don't get sick
Answer:
C. Funnel clouds
Explanation:
Tornato is a revolving column of air in touch with earth surface, linked to a convective clouds.
It usually resembles its look, like a funnel cloud.