What is the most likely way for the inheritance feature?

[user name]

What is the most likely way for the inheritance feature? (from google translate)

In other words what is the type/kind of inheritance that the below image shows? Is it autosomal? Is it X linked? Is it Y linked? Is it cytoplasmic? Is it dominance? Is it recessive?

Also what is the probability/chance that the son of couple 1 and 2 will be mutant if (in case that) they are going to be married?

I am newbie/novice in genetics and my lecturer/teacher didn't upload solution and/or answer to these two questions on the moodle, so I can't check and know if I solved and answered these two questions correctly or not, and I want to be prepared to pass my test in the next few days.

Also I read that there are two parents that are deaf, but their four children are not. Why? How this happened?

Any help will be appreciated!