Final answer:
The simplified expression of 21 + (-37h) + 19h - 14 is -18h + 7, which means the correct answer is option (c).
Step-by-step explanation:
The expression we need to simplify is 21 + (−37h) + 19h − 14. To find the equivalent expression, we can combine like terms. The terms with h, which are −37h and 19h combine to −18h. The constant terms, 21 and −14, combine to 7. Combining both results, we get the equivalent expression −18h + 7.
Therefore, the answer to the question is −18h + 7, which corresponds to option (c).