In "the Deadliest Tsunami in History," warning for an approaching tsunami can be difficult because a. the large waves are very small when out at sea.
b. they are so common that the signs are often unnoticed.
c. they are more frequent now because of global warming.
d. the equipment designed to warn for them has not been released for public use.

I think the answer is A, but I am not sure. Please Help.

question 1: d) the old man continued, "in the long run, what people think about shepherds and bakers becomes more important for them than their own destinies.'"

question 2: d) by providing a different perspective and encouraging the englishman to never give up, the boy him to discover the alchemist.

question 3: c) the stones he gave santiago the boy to recognize omens, which will him on his journey to find his personal legend.

question 4: d) when the englishman wants to quit, santiago doesn’t allow the englishman to give up.

question 5: a) by instructing the englishman to go and try, the englishman is motivated to continue on his journey toward his personal legend.

explanation: