Question

sometimes an economy cannot grow because of external factors, such as
lack of skilled labor.
poor infrastructure.
low domestic demand.
low demand for exports.

Explanation:

External factors affecting an economy's growth are those that come from outside the domestic economy. Lack of skilled labor, poor infrastructure, and low domestic demand are internal factors related to a country's own resources, development, and domestic market. Low demand for exports is an external factor as it depends on the demand from other countries (external market) for the country's exported goods and services.

Answer:

low demand for exports.