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A financial services firm decided to assess the return on its social investment in an educational program in local schools.As part of its assessment,it measured the improvement in learning among students who had participated in the program,compared with the learning of students who had not.Which of the following elements was assessed?
Phosphorous
A reactive, nonmetallic element essential for life, involved in energy transfer and the formation of bones and teeth.
Feldspar
A collection of minerals essential for forming rocks, which are highly prevalent in the Earth's crust and utilized in the production of ceramics and glass.
Hematite
A reddish-black mineral consisting of ferric oxide, commonly used as an iron ore or in pigment production.
Halite
A mineral composed of sodium chloride (NaCl), commonly known as rock salt, which forms by the evaporation of saline water in enclosed basins.
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