what is the meaning of suffix -ize in the word theorize?

Astronomer are able use data to theorize the existence of numerous other galaxies outside of the Milky Way.

A. Make into
B. do without
C. have enough
D. speak of

Will give brainliest to correct answer which statement in the press release is an example of bias? a.volunteers are truly america's unsung heroes. b.having a nationally recognized day gives everyone a chance to be a hero and give a hand to those in need. c.the commission works to ensure that its efforts in each of these areas benefit all illinois residents, especially children and youth. d.promoting and strengthening the traditional volunteer sector in illinois has been a priority of the commission since its inception in 1979.