Required information

NOTE: This is a multi$-$part question. Once an answer is submitted, you will be unable to return to this part Click and drag the given steps to thelr correspondi$$g step number to prove the given statement.

$A$BsubeA$BC$

$x$ is an element of both A and $B.$

$\backslash$table$[[,$Step $2,],[,,],[,,],[$Step $3,,]]$

Assume xinA$B.$

Therefore, $x$ is in $A$ or in $B$ or in $C$ by the addition rule.

Then xsubA or xinB by definition of union.

Therefore, $x$ is in $ABC$ by definition of union.