Explain the relationship between dominant allele and inheritance of the trait it codes for

The dominant allele is the allele, which if present in the heterozygous condition, masks the effect of the recessive allele, either completely or partially.

In the normal conditions (exception being incomplete dominance), the progeny having dominant allele, would represent a dominant trait, the recessive trait would be completely masked as if the allele for the recessive allele does not exist.

Hence, if the one of the parents has dominant alleles only, the progeny would also have dominant traits.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.

c. the initial amount of money placed in the savings account