The answer from the given choices is "c. two hands grasping the neck".
The universal sign for choking is "two hands grasping the neck".
Choking refers to a blockage of the upper airway by food or any other thing due to which a person feels difficulty in breathing. Choking can cause a straightforward coughing fit, yet entire blockage of the airway may prompt death. Breathing is an important part of life, if you don't breath obviously you will be dead. So, when choking occurs one will need a rapid medical attention.
