Question

The first bone bridge to improve hearing loss was implanted as part of a clinical trial in the __________?

1) 1970s
2) 1980s
3) 1990s
4) 2000s
5) 2010s

Answer 1

The first bone bridge to improve hearing loss was implanted in the 1980s.

Step-by-step explanation:

The first bone bridge to improve hearing loss was implanted as part of a clinical trial in the 1980s.