Each sentence below contains two blanks. Choose the pair of words that best fits the context of the sentence. Read each sentence carefully and select the most appropriate  Many urban areas are becoming increasingly ______ to extreme heat because dense construction materials tend to absorb and ______ solar radiation throughout the day.

Cities often experience the urban heat island effect, where buildings and roads retain heat, making areas vulnerable to high temperatures. A. resistant, disperse – Cities are not resistant; materials usually retain heat rather than disperse it. B. adaptable, weaken – Does not logically describe heat absorption. C. vulnerable, retain – Correct. Cities become vulnerable because surfaces retain solar radiation. D. immune, reflect – Incorrect because cities are not immune to heat. E. cautious, release – Contextually meaningless.