Cast-in-Place Concrete Deck is best described as:

• A. A deck formed by pouring concrete on site into forms
• B. A deck consisting of timber planks
• C. A deck made of precast panels assembled on site
• D. A deck using corrugated steel sheets filled with concrete

Answer: (A)

Cast-in-place means the concrete is placed and cured where the deck will be used, with formwork built on site to shape it. The description of pouring concrete on site into forms directly matches this method, since the deck is formed and cast in its final location rather than being built from pre-made components. The other options describe different systems: timber planks use wood for the surface, precast panels are manufactured elsewhere and installed, and corrugated steel sheets filled with concrete refer to a steel-decking system with concrete fill rather than a pure on-site pour into forms. So the on-site forming and pouring definition is the best fit.