Which verb form best completes this sentence. yo los lunes, miércoles y viernes.

Choose the sentences that are true. the observatory of mount tololo: is in the sahara desert has the largest telescope in the southern hemisphere are allowed student visits every saturday has free tours. i know little spanish so i had to look this up. i know simple spanish. sorry : (

The answer is a but you could also use c if you want

What book? what grade? ?