This is the 13388th most frequent German word.
behandelte
"Behandelte" means "treated" in English.
Here 'behandelte' is used as the past tense of the verb 'behandeln', meaning 'to treat', describing an action performed by the doctor.
Der Arzt behandelte den Patienten sorgfältig.
The doctor treated the patient carefully.
In this sentence, 'behandelte' refers to the discussion or coverage of topics, showing that 'behandeln' can also mean 'to address' or 'to cover'.
Das Buch behandelte verschiedene Themen über Umweltschutz.
The book addressed various topics concerning environmental protection.
Here 'behandelte' is again used as the past tense of 'behandeln', but in the context of interpersonal behavior, indicating an approach or attitude toward someone.