The correct Active/Passive form of the given sentence is:

☀ The cyclone has devastated thousands of villages.

Explanation for other options:

☀ The cyclone had been devastating thousands of villages. This option is in the active voice and does not represent the correct passive form. The correct passive form is "have been devastated," not "had been devastating."

☀ The cyclone was devastating thousands of villages. This option is in the active voice and does not represent the correct passive form. The correct passive form is "have been devastated," not "was devastating."

☀ The cyclone had been devastated thousands of villages. This option is in the passive voice but changes the tense to past perfect. The original sentence is in the present perfect tense, so the correct passive form should also be in the present perfect tense: "have been devastated."