Explanation:

Let’s break it down, step by step:

- Q goes on Thursday.

- Only one between Q and V, so V must be Tuesday or Saturday.

- P goes immediately after V. So if V is Tuesday, P is Wednesday.

- The number of people before P = after R. This means P is the 4th; R is also the 4th if you reverse the order from R.

- Only one person between R and S—so either (R, _, S) or (S, _, R).

- U goes after S—so S can’t be last.

Let’s map it:

1. Monday

2. Tuesday (V)

3. Wednesday (P)

4. Thursday (Q)

5. Friday (R or S)

6. Saturday

7. Sunday

Here’s how it fills:

- V must be Tuesday, P is Wednesday.

- Q is Thursday.

- (Number before P = number after R)—So R is Monday or Friday. If R is Friday, after R: Sat, Sun (2); before P: Mon, Tue (2)—matches.

- Only one person between R and S; so R Friday, S Sunday or S Wednesday, but P is already Wednesday.

- U after S, so S can’t be after U.

Let’s try:

Monday: T

Tuesday: V

Wednesday: P

Thursday: Q

Friday: R

Saturday: U

Sunday: S

Check:

- One between Q (Thu) and V (Tue) ? Wed. Okay.

- P after V—okay.

- Before P (Tue, Mon): 2. After R (Sat, Sun): 2. Okay.

- One between R (Fri), S (Sun): Sat. Okay.

- U goes after S? No, U is before S in this, not after.

Try S as Saturday:

Monday: T

Tuesday: V

Wednesday: P

Thursday: Q

Friday: R

Saturday: S

Sunday: U

Now, U is after S, works.

Question: Who goes on Wednesday? P.

Options:

1. T

2. V

3. S

4. P

5. Q

The answer is Option 4: P.

- P is the person going on the trip on Wednesday.

- S goes on Saturday.

- Option 4 is correct.

- Everything checks out per the clues.

So, the answer you want is Option 4: P. This is the person heading out on Wednesday.