このしるしは何を表していますか。

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

mark; sign; symbol; emblem; badge; crest; flag; evidence; proof; token (of gratitude, affection, etc.)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

what; how many; you-know-what; that; whatsit; what's the expression; what do you call them; what?; hey!

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to reveal; to show; to display; to express; to represent; to signify; to stand for; to make widely known

indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way