The Crust and Lithosphere (which are almost synonymous) are not typically divided into two distinctive layers, so we can reject them.
The correct answer is is the core: (b). The inner core is solid and it's made of iron and nickel. The outer layer is liquid and this is the reason for the differentiation of the two parts.
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<span>C. Plate movement and convection currents</span>
India gained its independence from Great Britain on August 15, 1947. The major cause of this was Mahatma Gandhi. He peacefully protested to get India free from Great Britain. The first prime minister of India was <span>Jawaharlal Nehru. Prime minister is basically a president.</span>
