In 3-Tire approach to daylighting system which of the following should contribute the more*Wood or oil firingElectrical LightingDay lightingLighting geometry and color finishes

The 3-Tier approach to daylighting system is a method used to maximize natural light in a building. Here's a step-by-step breakdown of the options you've provided:

1. Wood or oil firing: This is a method of heating and doesn't contribute to a daylighting system. Daylighting is about maximizing natural light, not creating artificial light or heat.

2. Electrical Lighting: While electrical lighting is important in a building, it's not the primary contributor in a daylighting system. The goal of daylighting is to reduce the need for electrical lighting by using natural light.

3. Daylighting: As the name suggests, daylighting should contribute the most to a daylighting system. This involves the strategic placement of windows, skylights, and other openings to allow natural light to enter and illuminate the building.

4. Lighting geometry and color finishes: This can also contribute significantly to a daylighting system. The shape and placement of your light sources (windows, skylights, etc.), as well as the color and finish of your walls and ceilings, can greatly affect how light is distributed throughout a space.

So, in a 3-Tier approach to daylighting system, daylighting itself and lighting geometry and color finishes should contribute the most.