You need to find the condition that makes that triangle ARC and triangle ALT be proportional (~).
Two tringles are proportional when the ratio between the corresponding sides in each triangles are equals:
The corresponding sides are:
AL and AR
AT and AC
LT and RC
Then, one condition that makes the triangles proportional is:
![(AR)/(AL)=(RC)/(LT)=(AC)/(AT)](https://img.qammunity.org/2023/formulas/mathematics/college/esetjlj94fswj0d2h7i35oiapwe7l736z6.png)
The corresponding anlges in proportional trainlges are also equal, then:
Other condition that makes the triangles proportional is:
![\angle ARC\cong\angle ALT](https://img.qammunity.org/2023/formulas/mathematics/college/9l3pkq04w3yj0vtgmsc7cnu5hydvoofrxc.png)
![\angle RAC\cong\angle LAT](https://img.qammunity.org/2023/formulas/mathematics/college/v6wf4u2oysbzu9gli6813jms6nr9ievltr.png)
![\angle CAR\cong\angle\text{TAL}](https://img.qammunity.org/2023/formulas/mathematics/college/jycluoq7l8aqlc8bzss7arn8z6baazokt1.png)
Then, all the options you have make the traingles be proportional.