Active transport occurs in cells, for example, when the Na-K pump is at work. Any process that involves active transport most often involves the .

The right answer is B. movement from a lower to a higher concentration. Active transport is defined as a transport process that only takes place in the respective system when energy is supplied from the outside.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.