In pairwise alignment, the process of lining up two sequences to achieve maximum identity include:
Group of answer choices:
A. One often finds that it is simply not possible to obtain a pairwise alignment.
B. To be objective requires scoring that weights matches and mismatches.
C. Can find that there is more than one solution for the alignment.
D. Never permits the introduction of gaps.

A. One often finds that it is simply not possible to obtain a pairwise alignment

Explanation:

I just did This

just here for the other one bc they put up with u

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.