The verb, ser, is in the singular el/ella/usted tense, meaning that the subject is only one person or thing. This eliminates the two middle choices, as they are multiple people.
Next, the adjective. Alto is in the masculine form, so Maria, as it is a girl name, is also able to be eliminated.
The correct answer would be Tomas.
1) sabe
2)conocen
3)conocemos
4)saben
The first one in English says <span>I just like pizza.
The second one says s</span>he end up buying a pencil.
The second should say She ends up buying pizza, not she end up buying pizza.
The first should sat I like pizza, not I just like pizza.
These are my two guesses. Sorry if it's wrong