A result of the "free zone" on the Colombia-Venezuela border there is

a. less activity on the border
b. a decrease in employment rates in both countries***
c. intervention of customs authorities
d. foreign interest from countries like the United States***

not sure between b and d

I believe it to be B.

To determine the correct answer between option b and d, let's break down the question and analyze the possible outcomes of the "free zone" on the Colombia-Venezuela border.

The term "free zone" typically refers to a designated area where certain economic activities are exempted from customs duties, taxes, and regulations. These zones are established to stimulate economic growth, attract investment, and generate employment opportunities.

a. Less activity on the border: This option suggests that the "free zone" has led to reduced activity on the border. However, without any specific information indicating the reasons behind this reduced activity, it cannot be considered a definite outcome of the "free zone."

b. A decrease in employment rates in both countries: This option posits that the "free zone" has resulted in a decline in employment rates in both Colombia and Venezuela. While it is possible that some local industries could face challenges due to competition with goods produced in the "free zone," it cannot be conclusively stated that it will cause a decrease in employment rates in both countries.

c. Intervention of customs authorities: This option proposes that the "free zone" has prompted an increase in customs authorities' involvement. However, since the essence of a "free zone" is the exemption from customs duties and regulations, it is less likely that there would be increased intervention from customs authorities.

d. Foreign interest from countries like the United States: This option suggests that the "free zone" has attracted foreign interest, particularly from countries like the United States. Free zones often entice foreign investors due to the advantages they offer, such as tax breaks and streamlined customs procedures. This option aligns with the purpose of establishing a free zone as a means to attract foreign investment.

Based on the analysis, option d seems to be the most plausible choice, as the establishment of a "free zone" on the Colombia-Venezuela border may attract foreign interest from countries like the United States. Therefore, option d is likely the correct answer.