The correct answer is A.
A yoke is a wooden bar used to connect two animals to a plow or, as here, a chariot. A yoke does not refer to the necks of animals themselves, but rather to the bar that is placed across them.
Here, the dragons have been yoked to a chariot that pulled one to the top of Olympus.
I would have to say that heav is the syllable that recieves the heaviest accent.
Answer:
1. The children aren't/are not awake
2. The dog isn't eating/didn't eat the bone
3. The grass didn't grow tall/The grass didn't grow