Answer : 3. "The clothes are washed by Priya in the evening."
Explanation :

The given sentence is in the active form and we need to change it to the passive form.
The given sentence is written in the simple present tense.
The simple present tense in the active voice has the following structure: Subject + V1+s/es+ object 

The simple present tense in the passive voice has the following
structure: Object+ is/am/are+ V3+ by + subject
Example - Active voice - He reads a novel.
Passive voice - A novel is read. Rules of Conversion from Active to Passive Voice: Identify the subject, the verb, and the object.
Change the subject into an object. Change the verb into the past participle form.
Change the object into the subject. Therefore, the correct answer is option 3.
Correct Passive Voice:
The clothes are washed by Priya in the evening.