Final answer:
Ontario is the biggest producer of metals in Canada.
Step-by-step explanation:
The province in Canada that is the biggest producer of metals is Ontario.
Ontario has a long history of industrialization and has a diverse range of metal industries. It is home to major mining operations that produce metals such as gold, silver, copper, and nickel. Ontario's mineral resources, coupled with its advanced technology and skilled workforce, make it a key player in the metal production industry in Canada.
The other provinces mentioned - British Columbia, Quebec, and Alberta - also have metal production, but Ontario's volume and variety of metals make it the largest producer in the country