Okay, so i really am trying to find what these sfx means but i can't find it anywhere. i think the second one means ping but what does the first one mean?

Kiko is writing an introduction for an article about the red panda. read what she has so far. what has red fur and a ringed tail, and is as big as a housecat? why, a panda, of course! the red panda doesn’t look much like its black-and-white cousin, the giant panda, but the two actually have a lot in common. which of the following should she add to her introduction? a. a clear central idea b. an opening that grabs the reader’s attention c. a statement previewing what points the essay will compare d. a statement that summarizes kiko’s opinions about the animals