A bird soars +75 feet in the air and a whale swims at -225 feet in the ocean. What does zero represent? What do - 225 ft and +75 represent?

The amount they are above and below sea level.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.