Assertion (A) : Access to Primary Health centres helps identification, care and prevention of communicable diseases in rural communities. Reason (R): More optimum utilization of rural health infrastructure is expected to yield expected results.

Assertion (A) is true: Primary Health Centres (PHCs) are the backbone of rural healthcare and play a vital role in identifying, treating, and preventing common communicable diseases through diagnosis, basic treatment, vaccination, and health education. Reason (R) is also true: More effective and efficient utilization of available rural health infrastructure (which includes PHCs, Sub- centres, etc.) is indeed expected to improve health outcomes and yield better results. However, (R) is a general statement about optimizing infrastructure use, while (A) describes the specific function of PHCs regarding communicable diseases. (R) doesn't explain how PHCs perform these functions or why they are effective in this role; it just states that using infrastructure well leads to good results. Therefore, (R) is not the correct explanation for (A).