The curl up test assess abdominal strength. Hence the answer is option A.
Explanation:
This test is generally done for abdominal. This test put much pressure on abdomen. This exercise can be performed by person of any age, sex etc. It will provide fitness to all of them. It should be done under the supervision of any gym guide or any other expert. It is done to reduce the belly fat.
It is proven to be the best exercise to reduce the tummy fat. It is so because it is done by the effort of abdomen and all the pressure is directed on the abdomen part. And all the options except abdominal strength is not included in the curl up exercise.