Marcos is a recent college graduate. He learned in his business courses that as a potential small business owner, he should focus his sights on domestic business only. Feedback: The world market is much larger and more lucrative than just the U. S. market. Small and medium-sized business accounted for 99% of the growth in exporting firms in recent years

The conclusion of the question is false, and Marcos has been taught something wrong, or he understood it in a wrong way.

Expalanation:

If the foreign market is much larger and lucrative than the domestic market, and 99% of the growth in exporting firms was small and medium-sized, Marcos, as a future small business owner, should definitely focus on the foreign market, because the economic evidence is telling him to do so.