What's a straight vertical line in japanese at the end?

Which detail from the diary of a young girl supports the idea that anne’s voice is optimistic? “at three o'clock . . the doorbell rang. i didn't hear it, since i was out on the balcony, lazily reading in the sun.” “so much has happened it's as if the whole world had suddenly turned upside down.” “the first thing i stuck in was this diary, and then curlers, handkerchiefs, schoolbooks, a comb and some old letters.” “it may be damp and lopsided, but there's probably not a more comfortable hiding place in all of amsterdam.”

Missus a. having been sent b. going to send c. having sent d. sending

Involving others in meaningful tasks is an example of which positive leadership quality: integrity initiative objectivity delegation