1. Right answer:
b. estas
Estas is a demonstrative adjective. Demonstrative adjectives demonstrate a quality about the noun they modify. Here that quality is the location in respect to the speaker or the listener. Estas is the feminine plural form of este that is used to point out something near to the speaker in space or time. So the spiders are near to the speaker. Finally:
Estas arañas
2. Right answer:
c. esta
Esta is another demonstrative adjective that comes from este. So esta is its feminine singular form. We use esta because the noun tortuga is given in feminine singular form. Recall that adjectives must agree with the nouns they modify in both gender and number. Finally:
Esta tortuga
