Answer :
ATTITUDE is the proper noun because everyone has its own different attitude.
Answer:
The word 'ATTITUDE' is an abstract noun.
D. abstract noun
Explanation:
A noun is the name of the person, place, animal, and thing. There are four types of noun. They are a proper noun, a common noun, collective noun, and an abstract noun. An abstract noun is a noun which tells about the quality, or state or an idea. Abstract nouns cannot be touched, it can only be felt.