Describe protons location charge mass

Protons are found in the nucleus of the atom. This is a tiny, dense region at the center of the atom. Protons have a positive electrical charge of one (+1) and a mass of 1 atomic mass unit (amu), which is about 1.67×10−27 kilograms.6  

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i still can't find this

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.