Answer:
Cars, cans and papers are generic and common words known by the majority of people and used very often on a daily basis, part of the ordinary; technical terms are related to specific sciences and industries, and akin to a particular area of expertise used mostly by proffessionals in that area rather than the general public; somebody not involved in construction might refer to a "bulldozer" (which is a crawler construction vehicle to move soil and rubble) as a tractor, or would use several words to describe it, instead of using the specific technical term. Therby option (3) bulldozer.
Explanation:
