Which of the following is an inference?

O A.

The gorilla was able to jump across the water.

B.

The little boy ran across the playground.

OC. John runs faster than Eric.

RN

OD. Their dog wasn't being playful; therefore, she must be sick.

D. Their dog wasn't being playful; therefore, she must be sick. It's because they are stating a fact, and making and assumption, using it.

Answer: Option OD.

The dog wasn't being playful; therefore she must be sick

Explanation:

Inference is a logical conclusion that is drawn from observation and reasoning. Inference is an educated guess.

From the correct option D, they observed that the dog is not being playful as she does all the time and a logical conclusion was made that 'she must be sick' which is why she was not being playful.