Which is a type of passive transport?a.endocytosis                               b.pinocytosisc.osmosis

The type of passive transport among the options given is c. osmosis.

Here's a step by step explanation:

1. Passive transport is a type of cellular transport where substances move across the cell membrane from an area of higher concentration to an area of lower concentration, without the need for energy input.

2. Endocytosis (option a) and pinocytosis (option b) are types of active transport. They require energy to move substances against their concentration gradient, i.e., from an area of lower concentration to an area of higher concentration.

3. Osmosis (option c), on the other hand, is a type of passive transport. It is the process by which water molecules move across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration, until the concentration is equal on both sides. This process does not require energy.