It is a. Esta because you are saying it is there.
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.
Answer:
He is ugly.
• She is beautiful.
• We are angry.
• They are thirsty.
• I am handsome.
• You are slim.
Explanation:
Imagine a red, arid, hot land. With geysers spitting into a dark sky and plummeting in the colder areas. In the hottest there is only lava. There's nothing that looks like a plant. Not even moss. Of course not, because life still doesn't exist. There's only stuff. Minerals, molecules, inert matter,... In a nearby pond, next to a brown rock, something moves inside. But we can't see them so they're molecules, so small they're indistinguishable from the liquid where they are. Suddenly, heat, movement, other molecules or mixing this, along with a little luck, mark the beginning of something completely new; the first germ of the origin of life is growing. • Extract six qualifying adjectives from the text, write them down and set them.
