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

I burnt my hand yesterday while cooking.

My hand was burnt yesterday while cooking.

In the active voice sentence, "I burnt my hand yesterday while cooking," the subject (I) performs the action (burnt) on the object (my hand).

To convert the sentence to passive voice, we make the object (my hand) the subject of the sentence and use the past participle form of the verb "burn" (was burnt). The agent or the doer of the action (I) is not mentioned explicitly in the passive voice.

Therefore, the passive voice sentence is: "My hand was burnt yesterday while cooking."

The other options are incorrect:

1. "My hand will be burnt yesterday while cooking" uses the future tense ("will be burnt") and does not match the past tense of the original sentence.

2. "My hand was burning yesterday while cooking" uses the past continuous tense ("was burning") and does not convey the passive voice meaning.

3. "My hand could be burnt yesterday while cooking" uses the modal verb "could" in a past tense context, but it does not match the original sentence in terms of tense, and the timing of the action is incorrect.

Therefore, the correct option is: "My hand was burnt yesterday while cooking."