Explanation:

- Let's figure out the correct order of the sentence parts:

- D. "you should" is likely the beginning as it introduces the subject "you."

- C. "even if others" provides a condition and fits next.

- B. "remain indifferent" pairs with the condition, forming a contingent clause.

- E. "to the humanitarian cause" is likely the object of "remain indifferent."

- A. "stride forward" serves as the final action of what you should do instead.

- Assembling these parts:

- DBCEA: "You should, even if others remain indifferent, stride forward to the humanitarian cause."

- Reviewing options:

- Option 1: CABED

- Option 2: BACED

- Option 3: DBCEA

- Option 4: ECBAD

- Option 5: CAEDB