Based on the description of the igneous rock having a coarse texture and dark color, it can be accurately described as:
produced from magma.
Coarse texture typically suggests that the rock is intrusive (plutonic) in origin, meaning it cooled slowly beneath the Earth's surface, allowing larger crystals to form. However, the dark color indicates it is likely high in iron and magnesium minerals, which is consistent with rocks like gabbro or diorite. The other options such as "small crystals," "cooled quickly," and "formed at Earth’s surface" would not be accurate for this type of rock.