Answer:
They both have languages that belong to the same family, known as  Athabaskan
Explanation:
The two tribes, Navajo and the Apache are considered to be nearly connected tribes. This is because it is believed that their ancestors migrated from present-day Canada and Alaska.
While their mode of lifestyle seems different, Navajo and Apache languages pertain to a language family known as Athabaskan.
Hence, the correct answer is because they both have languages that belong to the same family, known as Athabaskan.
