Answer:
1. Mira 2. Estudian 3. Bailan 4. Cocinas 5. Tocamos 6. Canta 7. Hablan
Explanation:
1. The subject is ella
2. The subject is ustedes
3. The subject is ellos
4. The subject is tu
5. The subject is Luis y yo (nosotros)
6. The subject is Beyonce (ella)
7. The subject is ellos
It think its D. pizarra but I'm not sure.
To answer your question, The standard deviation is a measure of the spread of scores within a set of data.
And example of this is in the picture below.
Hope this helps!!