Final answer:
To describe a person with little body fat in a way that has a negative connotation, the term 'bean pole' is the most appropriate among the options. It is colloquially used and can imply a lack of strength or substance, unlike the positive or neutral options provided. the correct answer is A. bean pole.
Step-by-step explanation:
When we describe someone as having little body fat, the language we use can vary widely in tone and implication. The negative connotation is key here since not all descriptions of body composition are inherently negative. It's important as a language learner to understand how word choice can affect the perception of the person being described.
Let's look at the options provided: Bean pole is a colloquial term often used to describe someone who is very tall and very thin, sometimes implying a lack of strength or substance; lithe suggests gracefulness and flexibility, often with a positive connotation; lean is a fairly neutral term that indicates someone who has muscle without much body fat; thin is a straightforward description that doesn't carry strong connotations either way, although it can be perceived negatively depending on context.
Given the need for a word that carries a negative connotation when describing someone with little body fat, option A, bean pole, is the most likely choice. While it's not overtly offensive, it is often used in a less than flattering manner, unlike the other options which tend to be more neutral or positive.
Therefore, the correct answer is A. bean pole.