12. Spinach cells have a haploid number of 5 chromosomes. How may different ways can spinach homologous be combined?
A. 25
B. 4
C. 1024
D. 32
E. 16

The provided question is incomplete, the complete question is about the spinal foramen with these four options -

A. poor posture from loss of tendon attachment sites

B. back pain from the compressed nerves  (the correct answer)

C. increased flexibility from the constriction of muscle

D. lower blood pressure from increased blood flow

Explanation:

Narrow cervical canal when there is a narrowing of foramen with central narrowing can cause various types of symptoms including the balance disorder, gait is the early sign.

The patients can suffer later with the proximal weakness which can lead to the paresthesia of limbs of an individual. These can affect the motor skills of individuals and leads to back pain as the narrowing of the foramen compressed the nerves.

Thus, the correct answer is option - B. back pain from the compressed nerves.