i have no idea

• chronological sequential - a narrative technique that follows a chronological order of events in a story
• nena and the puppy go to the park in the afternoon - at dinnertime, nena and the puppy stayed at home - nena goes to work in the morning, is this an example of chronological order?

  Yes
• en medias res - in the middle of things, in the middle of the story, in the middle of the action
• flashback - a scene or event that is shown in a different order to the usual chronological order
• "everytime i saw the park, i always remember that day i was playing with a puppy" is this an example of flashback?

  yes