Final answer:
The best combination of the sentences presented is option E, which clearly and correctly combines the two actions using a conjunction. It maintains the original meaning and is grammatically correct, unlike the other options which either contain grammatical mistakes or alter the intended meaning.
Step-by-step explanation:
The best combination of the given sentences that conveys the information in a clear and grammatically correct way is option E: Mitch was stuck with cactus needles, and he rode his bicycle home in pain. This sentence effectively combines the two separate actions, Mitch getting stuck with cactus needles and him riding his bicycle home in pain, using a conjunction that shows the relationship between the two actions.
Option C also combines the sentences, but it does not flow as well as option E because it uses 'and he was riding' which is lengthier and more awkward than 'and he rode'. Option D is incorrect because 'Mitch in pain' should be 'Mitch, in pain,' and 'sticking with cactus needles' incorrectly suggests that Mitch is sticking the needles into something, rather than being stuck by them. Option F introduces confusion by implying a cause and effect that does not make sense; it suggests that Mitch got stuck with cactus needles in order to ride home in pain, which is illogical.
When combining sentences, it's essential to ensure that the combined sentence maintains the clarity and meaning of the original statements, and that it is grammatically correct. Option E is the best choice because it does these things successfully.