Ants carrying leaves may indicate their food habit is an eater of plants or

Most ants are omnivores and are okay with eating plants, seeds, nectar, and even animals. Ants are also opportunistic in their feeding habits, which mean that they can easily adapt to the environment and will eat what they can to remain alive

the answer is b.) hydrogen bonds between bases.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.