Answer: The correct answer is option (C).
Explanation:
Birth rate in Hungary in 2011 = 9 (per 1000 people)
Death rate in Hungary in 2011 = 13 (per 1000 people)
Growth rate = Birth rate - Death rate :
9(per 1000 people) - 13 (per 1000 people)= -4(per 1000 people)
Negative sign indicates that there will be a decrease in growth rate by the magnitude of 4 per 1000 people.
Hence, the correct answer is option (C).