_______ is the systematic observation of behavior and usage patterns in natural settings.

A tenant in good standing under a valid five-year lease which makes no mention of assignment or sub-leasing, may legally do which of the following:

A: May sublease the property to another, but only with the consent of the lessor; B: May assign, but cannot sublease to another; C: May sublease to another, but can assign only with the consent of the lessor; D: May sublease or assign the leasehold to anyone, since the lease made no mention of any restrictions on such action.

The slope of the line labeled "C" in the diagram is:

A) order rate. B) rate of inventory demand. C) production rate. D) shipping rate.