(A) are located in their legs
(B) as their taste sensors
(C) food with their feet,
(D) butterflies taste their

The following question gives a sentence which has been divided into four parts which may not be in their correct order of narrative. The sentence is then followed by five options, one of which gives the sequence of the rearranged parts to make the sentence meaningful. Choose the option which gives the correct sequence of the parts. If the sentence is already arranged in the correct sequence, mark option " No rearrangement required " as the answer.

The correct option is DCBA.

Let's analyze the given parts of the sentence to arrange them in a logical and grammatically correct sequence:

(A) are located in their legs
(B) as their taste sensors
(C) food with their feet,
(D) butterflies taste their

Step-by-step breakdown of the arrangement:

1. Part (D) "butterflies taste their" serves as the subject and initial action of the sentence.
2. Part (C) "food with their feet," logically follows (D) to complete what and how they taste: "butterflies taste their food with their feet,".
3. Part (B) "as their taste sensors" explains the reason or mechanism: "...food with their feet, as their taste sensors".
4. Part (A) "are located in their legs" completes the clause by stating where those taste sensors are situated: "...as their taste sensors are located in their legs".

Combining all the parts in the order (D) → (C) → (B) → (A) gives the meaningful and complete sentence:
"Butterflies taste their food with their feet, as their taste sensors are located in their legs."

Therefore, the correct sequence is DCBA.