Please answer it right Chelsea drew two parallel lines, KL and MN, intersected by a transversal PQ, as shown
below:

Which fact would help Chelsea prove that the measure of angle KRP is equal to the
measure of angle MSR?

A. When angles KRS and MSR are equal to angle RSN, the angles KRP and MSR are congruent.

B. When angles KRP and KRS are equal to angle LRS, the angles KRP and MSR are congruent.

C. When angle LRS is equal to angle KRP and angles LRS and RSN are complementary, angle KRP and angle MS are congruent.

D. When angle LRS is equal to both the angles KRP and MSR, angle KRP and angle MSR are congruent to each other.

Stu and ambrose are working together on a study of whether diet is related to students' mental health. first, they randomly select 10 students from the student center and 10 students from the office of counseling and psychological services. then, they ask students to rate their diet in terms of healthiness on a scale of 1-100 before completing a 20-item mental health survey. a) name one of the constructs being studied b) how was the construct you named above operationally defined in this experiment? e) was the variable you described above their independent variable, their dependent variable, or a controlled variable? d) what is a confounding variable? what is a potential confound in this study?