Study the following information carefully and answer the questions given below.

Eight employees—P, Q, R, S, T, U, V, and W—work in a corporate firm. Each of them holds a different designation: Managing Director (MD), Executive Director (ED), Director, Vice President (VP), Associate, Analyst, Senior Officer, and Officer, though not necessarily in that order. The hierarchical order of these designations is in decreasing order of seniority, where the Managing Director (MD) is the senior-most position and the Officer is the junior-most position.
There are exactly three designations between U and T, who is just junior to V. At most one person is junior to W. S is junior to Q and just senior to R. P is senior to both Q and U.

Who among the following is a Senior Officer?

The correct option is T.

Let us step-by-step analyze the given information to determine the designations of all eight employees: P, Q, R, S, T, U, V, and W.

The designations in decreasing order of seniority (from 1 = Senior-most to 8 = Junior-most) are:

1. Managing Director (MD)
2. Executive Director (ED)
3. Director
4. Vice President (VP)
5. Associate
6. Analyst
7. Senior Officer
8. Officer

Now, let us analyze the clues provided in the question:

1. "At most one person is junior to W."
This means W can either be in position 7 (Senior Officer) or position 8 (Officer).

2. "There are exactly three designations between U and T, who is just junior to V."
Since T is just junior to V, V is immediately above T (V is senior to T by 1 position).
Also, U and T have exactly 3 persons between them.

3. "S is junior to Q and just senior to R."
This means Q is senior to S, and S is placed immediately above R (S is senior to R by 1 position).

4. "P is senior to both Q and U."
This gives the seniority relation: P > Q and P > U.

Let us test the possible positions for W, V, T, and U:

Case 1: W is Officer (Position 8)
If W = 8, then T cannot be 8. Let us try placing U and T:
- If T = 7 (Senior Officer), then V = 6 (Analyst). Since there are 3 persons between U and T, U must be at position 7 - 4 = 3 (Director).
Positions filled so far: 3: U, 6: V, 7: T, 8: W.
Remaining positions to fill: 1, 2, 4, 5.
We know P is senior to both Q and U (position 3). So P must be in position 1 or 2.
Also, Q > S > R with S and R adjacent.
If P = 1, U = 3, then Q, S, R must occupy positions 2, 4, 5. S and R are adjacent, so S = 4, R = 5, and Q = 2.
Let me check if all conditions are satisfied:
Position 1: P
Position 2: Q
Position 3: U
Position 4: S
Position 5: R
Position 6: V
Position 7: T
Position 8: W

Let us verify all constraints with this arrangement:
- Seniority order: 1: MD, 2: ED, 3: Director, 4: VP, 5: Associate, 6: Analyst, 7: Senior Officer, 8: Officer.
- Three designations between U (3) and T (7): positions 4, 5, 6 (S, R, V). This is 3 designations. Correct.
- T (7) is just junior to V (6). Correct.
- At most one person is junior to W (8). There are 0 persons junior to W, which is at most 1. Correct.
- S (4) is junior to Q (2) and just senior to R (5). Correct.
- P (1) is senior to both Q (2) and U (3). Correct.

Thus, the final arrangement from senior-most to junior-most is:
1. Managing Director (MD) - P
2. Executive Director (ED) - Q
3. Director - U
4. Vice President (VP) - S
5. Associate - R
6. Analyst - V
7. Senior Officer - T
8. Officer - W

Therefore, T is the Senior Officer.