Final answer:
The correct statement to add a criterion to the "ClientsByState" query in Design view to select only records where the State field value is TX is: SELECT * FROM ClientsByState WHERE State = 'TX'.
Step-by-step explanation:
The correct statement to add a criterion to the "ClientsByState" query in Design view to select only records where the State field value is TX is:
A) SELECT * FROM ClientsByState WHERE State = 'TX';
This statement uses the SQL SELECT statement to select all fields (*) from the table ClientsByState, but only where the State field value is 'TX'.