Ilustrate and differentiate joint from disjoint sets

Difference Between Joint and Disjoint Set
Assume that both the sets X and Y are non-empty sets. Thus, X ⋂ Y is also a non-empty set, the sets are called joint set. In case, if X ⋂ Y results in an empty set, then it is called the disjoint set.

Hopes this helps

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.