We are given two examples of how words are coded in a certain code language. Let’s analyze the pattern in each case.
- In the first example:
QUEUE is written as RVFVF.
Look at how each letter changes:
\[
Q \rightarrow R, \, U \rightarrow V, \, E \rightarrow F, \, E \rightarrow V, \, U \rightarrow F
\]
Each letter is shifted by a certain value. Specifically, each letter is shifted forward by 1 position in the alphabet, except for the 3rd and 5th letters, which are shifted by 1 and 3 positions respectively.
- In the second example:
CRWTH is written as BQVSG.
Let’s analyze the pattern of the shifts for each letter:
\[
C \rightarrow B, \, R \rightarrow Q, \, W \rightarrow V, \, T \rightarrow S, \, H \rightarrow G
\]
Each letter is shifted backwards by 1 position.
By applying the same pattern to the word PROCESS:
- \( P \rightarrow O \) (shifted back by 1),
- \( R \rightarrow Q \) (shifted back by 1),
- \( O \rightarrow N \) (shifted back by 1),
- \( C \rightarrow B \) (shifted back by 1),
- \( E \rightarrow D \) (shifted back by 1),
- \( S \rightarrow R \) (shifted back by 1).
Thus, PROCESS is written as **OQNBDR** in the code language.
Therefore, the correct answer is \( \boxed{3} \).