Answer:
(A) The distance of a galaxy is proportional to its recessional speed.
Explanation:
During the 1920's, Edwin Hubble discovered that galaxies are moving away from each other from earth at speeds that are proportional to their distance. In simpler terms, the farther they are the faster they're moving away from earth.
The University of Salamanca was established in the year <u>__1218__. </u>
2. A __<u>clase anual_</u>_ is a year-long course.
3. Salamanca is called __<u>La Ciudad Dorada__. </u>
4. Over 300,000 students attend the _<u>_La Universidad de Buenos Aires</u>__.
5. An __<u>examen parcial </u>__ occurs about halfway through a course.