Determine if the outcome of the event described would be found using a permutation or. combination

permutation is where order is important in a group of objects  while combination is a group of objects where the order does not matter.

permutation: placing items in a line, choosing 3-digit lock combinations, and placing first or second in a race

combination: choosing cards from a deck of cards, choosing a committee of 5 people

Explanation:

d) a week

because the land run of 1889, although not without precedent in the history of the west, further, their men were aboard the first trains, ready to jump off and begin staking their claims. oklahoma city, edmond, and guthrie were all so affected.