Answer:
it depends on the dance for example
Explanation:
for ballet heels (1)touching and feet forming a straight line; (2) heels apart and feet forming a straight line; (3) one foot in front of the other with the heel against the instep; (4) feet apart, one in front of the other; and (5) one foot in front of the other with the heel against the joint of the big toe.
I think its the X ray but I am not sure
...by fencing them off from foodservice facilities or using physical pest control (depends on the pest, but an example is mousetraps)