Well, tourism is the largest commercial service industry in the world.
Some sources list tourism at the largest indistry in the world, but this is difficult to measure. Generally, most sources say that food is the largest industry, followed by either Tourism or oil industry or communication.
The problem with this is that it's hard to distinguish: communication and oil are also used in tourism so the same activity can be a part of more than one sector. I would say that D is the best answer, but the question should specify the source it is referring to.
Answer: Health Numeracy
Explanation:
Health numeracy is a skill set needed to understand and use first hand quantitative health data, including basic computational skills, capability to use data in formats such as graphs and ability to pass information /communicate orally..
Health numeracy also involves skills that allows one to understand concepts of risk, probability, and the communication of scientific evidence.
Triangular sail developed by Arab or Indian merchants which was eventually adopted by European ship owners to improve the maneuverability of their ships. It could catch crosswinds and be used to drive a ship along its chosen course. The captains of caravels and galleons used this type of sail in conjunction with several other kinds of sails to cross the Atlantic and Pacific Oceans.
