Answer:
The code for REACT using the same letter shift is PCYAR.
Explanation:
The code for METEOR appears to be created by shifting each letter in the word 2 positions forward in the English alphabet:
M becomes N
E becomes C
T becomes W
E becomes A
O becomes T
R becomes L
So, applying the same shift to the word REACT:
R becomes P
E becomes C
A becomes Y
C becomes A
T becomes R
The code for REACT using the same letter shift is PCYAR.