"given a string variable named sentence that has been initialized, write an expression whose value is the index of the very last character in the string referred to by sentence. submit"

is this supposed to be a question ?

the answer is b. executive summary. a management summary, or executive summary, is a short article or section of a document, produced for business purposes, that condenses a longer report or proposal or a group of related reports in such a way that readers can rapidly become familiar with a large body of material without having to read it all.

the answer is:

c) organizational chart

hope it !