lifting a bale of cotton is no easy task. farmer jones wanted to store the cotton in the loft of his barn but he could not budge the bale. he consulted the high school's science teacher for . she suggested a simple machine.
farmer jones' options included an inclined plane, a fixed pulley, a block, and tackle, and a lever. if he had to lift the bale of cotton to a height of fifteen feet, which would be the most practical solution?
a) lever
b) screw
c) inclined plane
d) block and tackle (pulley)

idk what is it? is this a question that you know the answer or u dont

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.