Final answer:
The active sentence is converted to passive by focusing on the action and making the original subject ('everyone') the agent of that action in the sentence. The passive form is 'It is thought by everyone that Nepalese are brave and honest.'
Step-by-step explanation:
The sentence “Everyone thinks that Nepalese are brave and honest.” when changed to the passive voice would be: “It is thought by everyone that Nepalese are brave and honest.” In passive voice, the focus is on the action (thought) rather than the doer of the action (everyone).
The subject 'everyone' becomes the agent, usually preceded by the word 'by' in passive constructions, while 'Nepalese' remains the subject of the sentence.