Answer:
Tension
Step-by-step explanation:
Tension is a pulling force that is usually exerted by a string, cable, chain, or similar object. The object being acted on by the force of tension must be in direct contact with the string, cable, or chain doing the pulling.
In this case, the steel cable is pulling upward on the concrete block with the force of tension. The force of gravity is also acting on the block, but gravity is a noncontact force.