How about this: Sports will be fun and fair if everyone have good sportsmanship and knows the game well.
Jack is making plans to travel this summer to his favorite three places in the state.
Jack is sitting at the computer in his room and making plans to travel.
It has been his dream to visit Paris, France, so Jack is making plans to travel there.
It is those two because when it says "Jack is making plans to travel." it does not mention him saving up for years.
When you enumerate you need to put comas between all the items except the ones which are connected by "and" : as A is not correct as it does not have comas, and B is incorrect as it has comas where "and" is.
now, in a way both C and D are correct, but C is the usual accepted version, and D is an example of "Oxford coma" (where the coma is optional, to remain on the safe side, choose C).
the answer is correct
because eked means
manage to support oneself or make a living with difficulty