Cramp is a sudden painful, involuntary contraction (a) ___________a muscle. It generally (b) _________ the legs and hands. It can occur due to various (c) _________ such as metabolic abnormality, severe cold, lack (d) _________ blood flow and mineral deficiency. All these create pain or other types of sensory (e) ________ that are transmitted from the muscle to the spinal cord thus (f) _________ reflex muscle contraction. Thus, a positive, feedback mechanism (g) ________ so that a small amount of initial irritation (h) ________ to more and more contraction until a full-blown muscle cramp ensues.

(a) (i) in (ii) with (iii) for (iv) of
(b) (i) affected (ii) affect (iii) affects (iv) affecting
(c) (i) reasons (ii) reason (iii) reasoning (iv) reasoned
(d) (i) in (ii) for (iii) of (iv) by
(e) (i) impulse (ii) impulses (iii) impulsed (iv) impulsing
(f) (i) caused (ii) cause (iii) causes (iv) causing
(g) (i) occurs (ii) occurring (iii) occurred (iv) occur
(h) (i) lead (ii) leads (iii) leading (iv) led​