Answer:its got to be B.
Explanation:
Ores are mainly rocks containing minerals of metals with impurities which doesn't have to be non metals or contains lead (Pb) and also ores are not uniform on the earth crust as we have it different in all parts of the earth
The ores have been the mineral constituent in the form of rock. It has been mainly constituent of the metals. Thus, option B is correct.
Ore can be defined as the rock or mineral deposit consisting mainly of metals. With the development of the earth, there has been deposition of the metals concentrated at a location, Thus there has been no equal distribution of the ore in the earth's crust.
The ore is the constituent of the metals. Lead being a nonmetal has not been found in the ore.
The ores have been the mineral constituent in the form of rock. It has been mainly constituent of the metals. Thus, option B is correct.
For more information about ore deposits, refer to the link:
https://brainly.com/question/23491237
