Answer:
A. taking one course each year that will help him build a body of knowledge about the countries and cultures he is interested in working with
Step-by-step explanation:
Luca's long-term goal to spend a year after college working in an underdeveloped country, volunteering with Habitat for Humanity or a similar organization can best be achieved in a SMART way, EXCEPT by taking one course each year that will help him build a body of knowledge about the countries and cultures he is interested in working with.
This is because, SMART goals are an acronym for Specific, Measurable, Attainable, Relevant, Time-Based and taking a course each year is not attainable and time-based.