Consciousness probably arises from higher levels of in the brain.

The correct answer will be-neural activity in the brain.

Explanation:

Consciousness in humans depends upon the activity of the brain when the first-order state about the world is perceived.

The neural activity includes controlling the synaptic junctions, regulations of the synaptic vesicles, neurotransmitter receptors and cytoplasmic signalling molecules.

Studies indicated that neuronal activity changes in the frontal and temporal lobe before a change in the perception is observed and reported. These changes are correlated with the perception and the emergence of the conscious precept of the perception.

Thus, neural activity is the correct answer.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.