Choose the option that is the active form of the sentence.

Has your message been despatched?

Have you despatched your message?

The correct option that is the active form of the sentence is Have you despatched your message?

The other options are incorrect because:

• Has your message been despatched? is in the passive voice.
• Has your message despatched? is grammatically incorrect. The verb "to despatch" is followed by a direct object, but the phrase "has despatched" is not a direct object.
• Had you despatch your message? is in the past perfect tense, while the original sentence is in the present tense.
• Is your message despatching? is in the present progressive tense, while the original sentence is in the present tense.