The unit for atomic mass is a. gram b. amu c. pound d. none of the above

The unit of atomic mass is Amu.

(B) is correct option.

Explanation:

Atomic mass :

The mass of a single atom of a chemical element.

An atom made by the proton, electron and neutron.

One atomic mass unit is explained by one by twelve of the mass of a single carbon - twelve atom.

We know that,

Gram is the unit of mass in C.G.S unit.

Amu is the unit of atomic mass.

Pound is the unit of mass in F.P.S units.

Hence, The unit of atomic mass is Amu.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)