Which statement does not define or describe the concentration strategy accurately?

a$.$ The Check Mark Technique is used to check items off your time$-$management schedule that you completed on time and in the time block you planned.

b$.$ The Take$-$Charge Technique is a strategy to use to take responsibility for making adjustments necessary to increase your concentration and performance.

c$.$ The Say No Technique is a concentration technique you can use to say no to distractions, such as friends, the television, or social media messages.

d$.$ The No$-$Need Technique encourages you to ignore distractions that may break your concentration.