Tell me whether this situation would be a survey, an experiment, or an observational study based on the following information below. Find 100 students, half of whom play sports and compare the grade point average of the students who play sports with the students who do not play sports.

In the figure below, segment ac is congruent to segment ab: which statement is used to prove that angle abd is congruent to angle acd? a.)triangle acd is similar to triangle abd. b.)triangle acd is congruent to triangle abd. c.)segment a.d. is congruent to segment ac. d.)segment a.d. is congruent to segment dc.