When Rosemary accused her daughter-in-law of stealing the spatula that she herself misplaced, she was MOST likely in the stage of Alzheimer's disease.

Second stage of Alzheimer's diseases.

Explanation:

Alzheimer's disease is a degenerative disease that is characterized by gradual loss of memory, elevation in problems related to behavior and thinking.

Alzheimer's disease occur due to the damage of nerve cells. The two major proteins that are held responsible for the Alzheimer's disease is the beta-amyloid protein and Tau protein.

Alzheimer's has been divided into 7 stages depending on the decree of decline in memory.

The disease is undetectable at first stage, During the second stage ,very mild loss in memory is  noticed gradually the degree of decline increases as we advance in stages. The seventh stage is then characterized by severe loss of memory.

In the given instance Rosemary recognizes her daughter in law but just forgets about the spatula. This shows a very mild decline in memory. So, it is more likely that Rosemary is in the second stage of Alzheimer's.

they are known to reach a speed of 21 miles per hour

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.