People who have severed corpus callosum are likely to have difficulty: 1) writing a poem, because the speech area of their brain has been damaged 2) planning for an upcoming holiday, because the “executive control” area of their brain has been damaged 3) tracking the direction and speed of objects in motion, because the visual area of their brain has been damaged 4) coordinating speech and action across the left and right sides of the body, because the connecting part of the brain has been damaged

Option (4).

Explanation:

Corpus callosum is also known as callosal commissure. This area is present beneath the cerebral cortex of the brain. Corpus callosum is present in placental mammals only.

The corpus callosum connects the left and right side of body.The severed or improper functioning of corpus callosum may disturb the coordination of action and speech of the right and left side of body.

Thus, the correct answer is option (4).

answer; i believe is(b)converging

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.