My right arm has been starting to worry me . It has recently begun to have a strange sensation in on of my veins . It feels as though my blood has turned into a thick substance with a million ants in it . When my arm points up , I can feel my blood & what seems to be ants rushing slowly down my arm .

Based on the preceding passage, choose your answer for question Why is the narrator worried about their arm ?
Choose your answer from:
* They get a strange feeling when pointing their arm down ..
* They are getting no feeling ..
* They feel that the blood is pumping too fast ..
* They feel possible blood clots ..
The answer is:
They feel possible blood clots .