Answer:
10%
Explanation:
You got 10% of the original investment back
500x10%=50
The answer is signing or sign language. As this is the expression or language that they use to communicate towards other people as they were not able to communicate using their tongues as they don't have any hearing or their hearing input is impaired.
Answer:
Debriefing
Explanation:
which means a verbal description of the true nature and purpose of a study