Which of the following is an example of a trend?

a general direction in which something is developing or changing."an upward trend in sales and profit margins" synonyms: tendency, movement, drift, swing, shift, course, current, direction, progression, inclination, leaning; More 2. a fashion."the latest trends in modern dance" synonyms: fashion, vogue, style, mode, craze, mania, rage; More verb 1. change or develop in a general direction."unemployment has been trending upward" synonyms: move, go, head, drift, gravitate, swing, shift, turn, incline, tend, lean, veer"interest rates are trending up" 2. (of a topic) be the subject of many posts on a social media website within a short period of time."I've just taken a quick look at what's trending on Twitter right now"