I believe that it would be B (reloj) since it is talking about how there is a window, a door and then a clock in a classroom.
It is also giving you the masculine singular form indicating that it can only be reloj.
60 degrees plus 30 degrees equals:
90 degrees
ser- to be
1. Los perros son mascotas
the dogs are pets
2.
3. Mis padres son muy guapos
my parents are very pretty
For your information, conjugation means the adaptation of ir/er verbs in Spanish to suit who is performing it. (to --- verbs)
eg.
comer- to eat
como- i eat
comes- you eat
come- he or she eats
.
.
.
these can be followed on by yo,tu,ella/el though is not necesary
There’s no reading, you should ask the question again with the photos
It wold be 1. Queria llamarte