निम्नलिखित में से कौन सा एक पादप हार्मोन है जो मुख्य रूप से वृद्धि को रोकने (Inhibit) का कार्य करता है?

Which plant hormone is primarily responsible for promoting cell division (cytokinesis)?

Which plant hormone is primarily responsible for cell elongation and phototropism?

Which plant hormone is primarily responsible for the ripening of fruits?