Stella called him a grumpy old man before laughing freely ; Mac 's heart skipped a beat as the breeze whipped her hair about her face . She led him to the weather - worn garden furniture and pushed him into a chair , thrusting a thermos of steaming coffee into his hands . Moments later , the sky erupted into brilliant colours : red , blue and white to celebrate their country .

Question with options to choose from: Why did Mac 's heart skip a beat ?
Select from the following. [I] They realized they loved Stella .. [II] None of the above choices .. [III] They felt afraid of the situation .. [IV] They were in awe of Stella 's beauty ..
[IV]