Although the options for the question were not made available, we can confirm that the most likely answer will be Bacillus and Clostridium species of bacteria.
Bacillus and Clostridium bacteria.
There are very few bacteria capable of producing both gram and endospore positive results.
The Bacillus and Clostridium species are the most common of the few bacteria that are able.
If either of these is present in the options, it will be the correct answer.
Therefore, we can say that the most likely answer will be Bacillus and Clostridium species of bacteria.
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