Question

fill in the blank so that the resulting statement is true. the statement ∅⊆ b tells us that is a of every set.

Explanation:

The symbol $\varnothing$ represents the empty set. The notation $\varnothing \subseteq B$ means the empty set is a subset of set $B$, and this property holds for all sets.

Answer:

The empty set ($\varnothing$) is a subset of every set.
Filled blanks:

1. the empty set ($\varnothing$)
2. subset