I believe that answer is a because it has opposite reactions.
        
             
        
        
        
An agronomist, or crop scientist, studies plants and how they can be grown, modified, and used to benefit society. They use science to carry out experiments that create new techniques for agriculture production. 
The answer is the first option.
        
             
        
        
        
In general, the most materially advanced and developed countries are focused on extensive development of the secondary sector of their economy. Because secondary sector is made up of Construction and Manufacturing, which the advanced and developed countries would like to focus on.
        
             
        
        
        
Since there is no map posted, I will tell you the location of Colombia, and hopefully you can figure it out.
Colombia is a country in South America. It is one of the two countries that occupies the northern part of the continent. Colombia is on the western (left on the map) half of the northern part of the continent. It is a country that comes out on both, the Caribbean Sea, and the Pacific Ocean. On its northeastern part it has a border with the country of Panama, on its eastern side with Venezuela, Brazil on the southeast, Peru on the south, and Ecuador on the southwest.
 
        
             
        
        
        
<span>39,680 in 2016. I think hope this helped! :)</span>