Which symbol creates a true sentence when x equals 3? =,

The correct answer option is '='.

Step-by-step explanation:

There a number of different mathematical symbols to show equality or inequality or to compare two values if they are lesser or greater than the other value.

The symbol '=' means 'equals' or 'equal to',

the symbol '<' means lesser than; and

the symbol '>' means greater than.

So if x equals 3, then the symbol of 'equal to' will be used which is '='.