Can someone me in this question it's politics

The lifeguard at the local beach record the tides each day the chart below shows the high and low tides over two days

When discussing comparative and absolute advantage, which best describes specialization? developing expertise in certain types of production limiting the types of goods and services produced targeting specific consumers and retailers producing certain items for specific market segments the answer is: the act of limiting the kinds of goods and services produced

Why does the united states constitution require that a national census be taken every ten years?