Select the correct passive form of the given sentence.

Susan writes recipes for the cookbook.

Recipes are written by Susan for the cookbook.

The correct passive form of the given sentence is Recipes are written by Susan for the cookbook.

The active voice of the sentence is Susan writes recipes for the cookbook. This sentence is in the simple present tense, which is used to describe an action that happens regularly or always happens. The passive voice of the sentence is formed by putting the subject of the active sentence after the verb "to be" and the past participle of the main verb. In this case, the subject of the active sentence is "Susan" and the main verb is "write." The past participle of "write" is "written." So, the passive form of the sentence is Recipes are written by Susan for the cookbook.

The other options are incorrect because:

• Recipes are write by Susan for the cookbook. is grammatically incorrect. The verb "are" is plural, but the subject of the sentence, "recipes," is singular.
• Recipes were written by Susan for the cookbook. is in the past tense, while the original sentence is in the simple present tense.
• Recipes are being written by Susan for the cookbook. is in the present progressive tense, which is used to describe an action that is happening now. The action of writing recipes is not something that is happening now.