Answer:
This is an example of adjective clause
Explanation:
The term which is used in the example and Adjective Clauses inform me that a noun is included in the example, which ends up supporting my answer because the noun occurs at a certain time (which transitions the fact that Diwali, a Hindu festival is celebrated on autumn.)
So if you have 32 vehicles and 20 pickup trucks then you have 12 vans.
so your ratio would be 20 to 12 then reduce you should get 5 to 3
