$1)\_\_\_\_\_$ diversity refers to diversity regarding observable attributes such as race, ethnicity, sex, and age.

$(2)\_\_\_\_\_$ diversity refers to diversity with respect to attributes that are less easy to observe initially but that can be inferred after a more direct experience.

$(1)$ Deep$-$level $(2)$ Surface$-$level

$(1)$ Surface$-$level $(2)$ Deep$-$level

$(1)$ Disjunctive $(2)$ Conjunctive

$(1)$ Conjunctive $(2)$ Disjunctive