[Solved] A metamorphic rock with more than 50% platy and elongated minerals,all of which are visible to the naked eye is a A) phyllite. B) gneiss. C) slate. D) schist. Mission Statement: A formal summary of the aims and values of a company, organization, or individual, often guiding its decisions and directions. Productivity: The effectiveness of productive effort, often measured in terms of the rate of output per unit of input. Daily Work: Routine tasks or activities that a person engages in as part of their occupation or job responsibilities. Productivity: The efficiency with which an individual, organization, or economy converts inputs into useful outputs.