I know one of them 3 and 4
Explanation:
I think C is the right answer
Answer:
Differences in facial expression
Explanation:
There are 7 types of facial expressions each of which has its own uniqueness.
Difference in facial expressions do not hinder non verbal communication because facial expressions have proven to be an effective means of communication in the absence of a common language.
Though, it can be a very strange "exercise" and energetic gesturing but all emotions shared via facial expressions are universal and there won't be any difficulty in understanding them.
