Which statement best describes the function of arteries, veins, and capillaries in the circulatory system?

a. arteries generally carry oxygen-rich blood away from the heart; veins generally carry oxygen-depleted blood back to the heart; capillaries deliver blood to individual cells.
b. arteries carry oxygen-rich blood to the heart; veins carry oxygen-depleted blood away from the heart; capillaries deliver blood to individual cells.
c. arteries carry oxygen-rich blood to the heart; capillaries carry oxygen-depleted blood away from the heart; veins deliver blood to individual cells.
d. arteries deliver blood to individual cells; capillaries carry oxygen-rich blood to the heart; veins carry oxygen-depleted blood away from the heart.

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.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

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