The Answer would be A because the Answer talks about how to know of the helmet fits
Taking into account the statement above: "Joe thinks he is smart compared to everyone else in his algebra class. This is an example of how ______ can define our self-concept"
The answer is: Reference group.
Hope this helps.
The details add to the story because in the beginning of the story, things seemed calm and relaxed. "At midday the sky to the south warmed to rose-colour, and marked where the bulge of the earth intervened between the meridian sun and the northern world." But as the night drew closer, the calm, relaxing feeling drifted away and was replaced with a dark, mysterious feeling of suspense. "<span>As darkness came on, the hunting-cries to right and left and rear drew closer—so close that more than once they sent surges of fear through the toiling dogs, throwing them into short-lived panics."
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Osteoarthritis is due to the wear and tear on the cartilage of a JOINT. (D)
