Answer:
1. b. ship
2. c. journey
3. for 1. they sailed (only ships sail) and 2. they traveled/sailed to somewhere else, "they sailed in the Atlantic" to "visit new places." And that's usually called a journey
4. a.
It seems as though the Author's purpose is to appeal to a reader's sense of positivity.
We're talking here about Hector Camacho, who was born in 1962 and died not too many years ago (2012). His alias or nickname was "Macho Camacho," and he lived up to the "macho" hype with his flamboyant style and his success in the boxing ring. His professional record was 79 wins (38 of those by knockout), 6 losses, and three draws.
The son of Hector Camacho who was 1996 US Amateur Light Welterweight champion -- that was Hector Camacho, Jr., known as "Machito."
Voldemort trying to get the stone, but Harry stopping him.