What studies can show that robots' efficiency could be decreased if it is not charged or rested properly and adequately? I need a answer please

But one hundred years later, the negro still is not free. one hundred years later, the life of the negro is still sadly crippled by the manacles of segregation and the chains of discrimination. one hundred years later, the negro lives on a lonely island of poverty in the midst of a vast ocean of material prosperity. one hundred years later, the negro is still languishing in the corners of american society and finds himself an exile in his own land. so we have come here today to dramatize a shameful condition. in paragraph 3, which rhetorical technique is being used to add emphasis? a) overstatement b) understatement c) parallel structure d) rhetorical question

What would be a good starter sentence for writing a review over hidden figures?

According to the study, a is when you string one quote after another in an essay without connecting them