Which verb is used to tell position?

1 point
a.
estar

b.
ser

Creo que es selva o isla es una parte de la tierra

The answer is probably 2. mido
mido does not appear to be a word

The correct answer is
1. black death

a deadly plague that swept through europe between 1347 and 1351, it killed one third of european population, but the left food supply give chances to survivors for advancement.

and

2. smallpox

an eradicated virus that used to be contagious, disfiguring, and often deadly.

B. es la una y media