Question

1. give another name for line r.

Explanation:

Step1: Recall line - naming convention

A line can be named using any two points on the line. Line r passes through points A and C.

Step2: Determine correct name

The line can be named as $\overleftrightarrow{AC}$ or $\overleftrightarrow{CA}$. Among the options, $AC$ (assuming it represents the line $\overleftrightarrow{AC}$) is a valid alternative name.

Answer:

AC