An apostrophe is used to form possessive nouns and contractions.
Why do you want someone else to write it for you?
Answer:
a). 'Absolute Threshold' is demonstrated as the least or minimum stimulation or arousal required to detect or perceive a specific external stimulus by our senses(sight, smell, touch, vision, hear) at least half of the time(50%). In the given situation, Marisol would require to feel the ardor of the atmosphere around her to discover the actual temperature, at least half of the time.
b). The difference threshold is exemplified as the difference of variation that is required between two external stimuli to be able to perceive a difference among them. In the given situation, if there's change/variation in the temperature Marisol would be able to detect it due to the existence of a difference between the two temperatures.
c). Selective attention is described as indulging your focus selectively onto one particular stimulus while ignoring the others at the same time. Such attention would contribute to Marisol to focus on specific stimuli associated with the winter weather.
