Asphalt is a ______.

The correct answer is Option (4) → Sticky, black, and highly viscous liquid or semi-solid form of petroleum

Asphalt, also called bitumen, is the heaviest part of crude oil. It is left at the bottom when crude oil is distilled in a refinery, and it is also found in natural pools such as the Pitch Lake of Trinidad. It is black, sticky and so thick that it hardly flows at room temperature.

Mixed with stone chips and sand, it binds them together, which is why it is used for surfacing roads and for waterproofing roofs.