The pattern is:
m u m g p g u _
There are 6 blanks (positions 2, 4, 7, 9, and 12—5 blanks shown? Actually the options provide 5 letters, matching the 5 blanks):
Fill the blanks with g, p, u, m, p:
2 → g
4 → p
7 → u
9 → m
12 → p
This gives:
m g u p m g u p m g u p
which is simply "mgup" repeated three times:
mgup | mgup | mgup
So the correct alternative is:
✅ g, p, u, m, p