European colonies are experiencing issues with declining populations one of the main causes of this declines is

Low birth rates

Explanation:

The cause of European countries having population decline can be attributed to LOW BIRTH RATES. This is evident in the fact that the recent statistical survey has shown that the total fertility rates in the majority of European countries are 1.55 per woman.

However, the ideal birth rate according to the United Nations Population Division for an optimum population should be at least 2.1 per woman.

Hence, in this case, the correct answer is "LOW BIRTH RATES."

the answer would be c

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.