In Japan a trained girl can operate oyster muscle to insert the nucleus ______?

جاپان میں ایک تربیت یافتہ لڑکی نیوکلئس کو داخل کرنے کے لیے _____ سیپ کے پٹھوں کو چلا سکتی ہے؟

25-40 per hour

10-20 per hour

20-25 per hour

None of these

In Japan, a trained girl can operate an oyster mussel to insert the nucleus at a rate of 25-40 per hour.

This efficient technique is part of the traditional practice of pearl farming.