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

☀ Didn’t anyone tell you about the new policies of resigning?

Explanation for other options:

☀ Didn’t anyone told you about the new policies of resigning? This option uses the incorrect verb form "told" instead of "tell" in the question, making it grammatically incorrect.

☀ Didn’t anyone tells you about a new policies of resigning? This option uses the incorrect verb form "tells" instead of "tell" and adds "a" before "new policies," which is not present in the original sentence and makes it grammatically incorrect.

☀ Didn’t anyone told you about the new policies of resign? This option uses the incorrect verb form "told" instead of "tell," which makes it grammatically incorrect. The correct form is "tell" in the question, not "told."