Accurate measurements have been collected for more than a century.
“Total cost of all factors of production consumed or used in producing a good or service. ... Market price: Market price is the price at which a product is sold in the market. It includes the cost of production in the form of wages, rent, interest, input prices, profit etc”
I would say D because it really explains what your favorite vacation is and that you feel relaxed when on vacation
The oceans of the world exist as distinctly different bodies of water