Final answer:
'Enmity' in the given sentence describes a state of division or conflict, therefore, the best definition according to context clues is 'hostility'.
Step-by-step explanation:
In the provided sentence, the bold-faced word is 'enmity'. This is an English language question about using context clues to interpret the meaning of a word. According to the sentence, 'the enmity between house republicans and democrats often keeps them from getting anything of real value done.' The phrase 'keeps them from getting anything of real value done' suggests that 'enmity' is something that creates division or conflict. Therefore, the suitable choice is option (d) 'hostility', meaning intense opposition or hatred.
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