Images, concepts, and symbols areSelect one:a.examples of heuristics.b.types of morphemes.c.types of semantics.d.basic units of thought.

To address your question, let's analyze each option to find the correct answer.

1. Option A: examples of heuristics.

   • Heuristics are mental shortcuts or rules of thumb that help in problem-solving. Images, concepts, and symbols do not fit this definition as they are more related to representation and understanding rather than shortcuts.

2. Option B: types of morphemes.

   • Morphemes are the smallest units of meaning in a language, such as prefixes and suffixes. Images and symbols are not related to morphemes.

3. Option C: types of semantics.

   • Semantics deals with meaning in language; however, images and symbols themselves are not classified as types of semantics but can be used to convey meaning.

4. Option D: basic units of thought.

   • This option aligns best with the definition. Images, concepts, and symbols can all be considered basic units through which we process and convey thoughts.

Given this analysis, the correct answer is:

Final Answer

d. basic units of thought.