The statistics show that the human attention span is decreasing

Based on its structure, which word  most likely  means "someone who takes advantage of circumstances”?

Use morphology and syntax to make grammatical sense of the following sentence (mark all that the ova of all mammals except the monotremes undergo holoblastic segmentation. the -s inflection indicates that monotremes is a plural noun. the suffix -ic indicates that holoblastic is an adjective. the suffix -ation in the word segmentation is a noun-forming suffix denoting a process. the -s inflection indicates that monotremes is a possessive noun.

One important character trait which levi to compete well is revealed in the first paragraph. it is that a) he is often fearful. b) he thinks before he acts. c) he tends to be suspicious. d) he is good at finding hidden things.