98 points! include an answer and in advance!

Which of the following statements is true about taste bud preferences? a. taste buds respond exclusively to a certain taste sensation, like saltiness. b. taste buds have the ability to respond to all of the taste sensations. c. taste buds do not differentiate between bitter and salty sensations. d. taste buds have the capability to detect three taste sensations.

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Hurry plz answer the y-intercept of a parabola is 1, and its vertex is at (1,0). what function does the graph represent? a. f(x) = (x − 1)2 b. f(x) = (x + 1)2 c. f(x) = -1(x − 1)2 d. f(x) = -1(x + 1)2