In liver, which of the following inhibitory effects is the key regulatory event that ensures newly synthesized palmitoyl-coa is not immediately oxidized?
a. acyl-coa synthetase by malonyl-coa
b. carnitine-acylcarnitine translocase (cat) by palmitoyl-coa
c. carnitine-palmitoyl transferase-i (cpt-i) by malonyl-coa
d. cpt-i by palmitoylcarnitine
e. carnitine-palmitoyl transferase-ii (cpt-ii) by acetyl-coa

C. Carnitine-palmitoyl transferase-I (CPT-I) by malonyl-CoA.

Explanation: Carnitine-palmitoyl transferase-I (CPT-I) is a mitochondrial protein that mediates  transport of long-chain fatty acids from cytoplasm to mitochondria, bond to carnitine (amine derived from lysine and methionine). This transport into the mitochondria is for the fatty acid can be oxidized, to produce energy. After food intake, glucose levels rise and the concentration of acetyl-CoA rises too and Malonyl-CoA is synthetize and inhibite the CPT-I transport. High levels of Malonyl-CoA mean that energy are avaible and fatty acids can be made, hence, not oxidize.

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.