The revolution of the moon around the earth makes the moon appear as if it is changing shape. from earth we see the moon grow from a thin crescent to a full moon and then shrink back to a thin crescent again. the phases of the moon depend on its position in relation to the sun and earth. as the moon makes its way around the earth, we see the bright parts of the moon's surface at different angles. these are called "phases" of the moon.
why does the moon have different phases?
a) the sun moves around the moon

c) the moon moves around the earth
d) the moon follows the sun around the earth

one answer was marked out.

ι вєℓιєνє ιт ιѕ тнє fιяѕт ¢нσι¢є(α.)

нє ѕнσυℓ∂ ѕмιℓє ρσℓιтℓу αи∂ ѕρєαк тσ тнє ρєяѕσи ωнσ ιѕ ιитєяяυριиg αfтєя тнє ∂ιѕ¢υѕѕισи

нσρє ι ¢συℓ∂ нєℓρ.

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

a skateboard rolling across the street - apex