Are the buying and selling of stocks centralized activities? why or why not?

yes, the new york stock exchange is the principal exchange for the nations of the world.

no, people can buy stocks anywhere, and they do not need to go through a market.

yes, the world’s stock markets are coordinated exchanges, and they are dependent on one another.

no, there are many stock markets around the world, and they are independent of one another.

Write a method replacekey in the minheap class with the following signature: public void replacekey(integer oldkey, integer newkey) the method will replace the first occurrence of oldkey with the newkey, and restore the min-heap property after the change. if the oldkey does not exist in the heap, the method prints an appropriate message and returns without changing the heap. example: suppose our binary heap object (bh) has the following keys: *** 4 6 7 32 19 64 26 99 42 54 28 then the method call: bh.replacekey (oldkey integer(54), newkey integer(2))

Which of these is a benefit of social networking? oa. hiding your true identity from friendsob. avoiding talking to people in personoc. spending time with friends instead of studyingod. connecting with new people

The "instance" relationship shows that something is an object of a