Explain the process in which hormones secreted by the pancreas function with respect to increased glucose levels in the blood.
synthesis of hormones
by beta cells
release of hormones
from the receptors
intake of glucose molecules
from the blood by specific
transporters
high amount of glucose in
the blood, sending signals
toward the pancreas
binding of hormones with
receptors on the liver

Pancreas- It mainly function as an endocrine gland, secreting a number of digestive enzymes. Along with that it has a very unique function of secretion of hormones which mainly regulate the blood sugar level. The hormones are secreted by the pancreatic islets also known as islet of Langerhans.

These hormones secreted are glucagon, insulin, somatostatin, and pancreatic polypeptide (PP). Mainly the secretion of glucagon and insulin is done for balancing the level of glucose in blood.

Explanation:

The beta cell produces the hormone insulin, as each islet is comprised of 75 percent of beta cells.

Elevated blood glucose levels stimulate the release of insulin. Now, the function of insulin is to balance the blood sugar level.

Secretion of Insulin Step by step:

Note:However, the red blood cells, as well as cells of the brain, liver, kidneys, and the lining of the small intestine, do not have insulin receptors on their cell membranes and do not require insulin for glucose uptake.

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.