Step-by-step Solution:

Quick Solution

The original five clues are actually sufficient to determine the complete height order of all five people. The question is essentially asking which of the given statements is a correct conclusion that can be drawn from those clues.

1. Determining the Complete Order from the Original Clues

• From clue 4 ("Eenu is taller than Anu") and clue 1 ("Anu is taller than Cini"), we get the chain: Eenu > Anu > Cini.
• From clue 2 ("Eenu is shorter than Binu"), we can add Binu to the front of this chain: Binu > Eenu > Anu > Cini.
• The key clue is "Binu is shorter than only one person." Since there are five people in total, this means Binu must be the second tallest person.
• The only person left to place in the ranking is Dany. For Binu to be the second tallest, Dany must be the one person who is taller than him.

Therefore, the complete and unique ranking from tallest to shortest is:

Dany > Binu > Eenu > Anu > Cini

2. Evaluating the Options

Now we check which of the given statements is a true conclusion based on our derived order:

• A. Binu is 7 feet tall. (This provides a specific measurement, which is new information, not a logical deduction from the given clues).
• B. Dany and Binu do not have equal height. (This is true, but our deduction is more specific: Dany is taller than Binu).
• C. Eenu is the tallest in the group. (This is false, as our ranking shows Dany is the tallest).
• D. Dany is the tallest in the group. (This is a correct and strong statement that perfectly matches our final conclusion).

Final Answer: The statement that would help to logically order the persons (by confirming the result of the deductions) is that Dany is the tallest in the group.