Given:
Total number of students = 38
From the given Venn diagram, let's determine how many students have been only to Spain.
From the venn diagram, we have the following:
Number of students that have only been to Germany = 2
Number of students that have only been to France = 6
Number of students that have only been to Spain = 8
We can see in the circle that represents Spain, the number that is alone is 8.
Therefore, we can say that 8 students have been only to Spain.
ANSWER:
8