The question asks about the number of listed countries that share a land border with Ukraine. Considering each option:

Option 1 says "only two" and this is the correct answer. Bulgaria, Czech Republic, Latvia, and Lithuania do not share a border with Ukraine, leaving only Hungary and Romania that do.

Option 2 says "only three", but this isn`t correct. Besides Hungary and Romania, the other four countries (Bulgaria, Czech Republic, Latvia, and Lithuania) don`t share a land border with Ukraine.

Option 3 says "only four", which is also incorrect. As aforementioned, only Hungary and Romania share a land border with Ukraine from the list.

Option 4 says "only five", which is incorrect for the same reasons – only two countries from the provided list share a land border with Ukraine.

Thus, the accurate answer is option 1: Only two.