Often, when groups that speak different languages have constant interaction with each other in a given space, their languages will

i. create a new language
ii. break apart
iii. disappear

a.
i. only
b.
ii. only
c.
iii. only
d.
ii. and iii.

technical

Explanation:

based on the information provided within the question it can be said that the skills being mentioned are technical skills. These are the abilities and knowledge that an individual must acquire in order to be able to efficiently complete the tasks required of a job. Managers most of all need these skills in order to guide employees and know how to fix solutions that require these skills. Having this knowledge will allow them to rise up in the ranks faster.