Which set of insects is useful to man?

کیڑوں کا کون سا سیٹ انسان کے لئے مفید ہے؟

Silk moth, honeybee and dragon fly

Honeybee, locust and lac insects

Lac insects, silk moth and honeybee

None of these

Lac insects produce lac, used in varnish and polish.

Silk moths produce silk, a valuable textile fiber.

Honeybees provide honey and beeswax and help in pollination.