Final answer:
The sentence that correctly uses an adjective to compare two things is 'My friend is taller than I,' as it uses the comparative adjective 'taller' to indicate a difference in height between two people. The correct answer is option c.
Step-by-step explanation:
The question asks which sentence correctly uses an adjective to compare two things. An adjective is a word that modifies or describes a noun. In comparisons, we mainly use comparative adjectives to show the differences between two things. When comparing two things, we often use the comparative form of an adjective, typically constructed by adding -er to the end of the adjective or using the word more before the adjective. For instance, the adjective tall becomes taller in its comparative form.
Examples of Comparative Adjectives
- Rebecca is very tall compared to other 14 year old girls. This sentence uses very to qualify the adjective tall, but it doesn't compare her height to anyone else's.
- Rebecca is taller than Matt. Here the adjective taller is used in its comparative form to show that Rebecca is taller when compared to Matt, which makes this a comparison between two individuals.
- Matt is shorter than the average 14 year old boy. This sentence compares Matt's height to the average height but doesn't use the comparative form of an adjective to make the comparison.
Looking at the provided options and applying the definition of comparative adjectives:
- I like to color with my friends. - This sentence doesn't contain a comparison.
- John is wearing a red coat. - This sentence describes John's coat but doesn't compare it to another.
- My friend is taller than I. - This correctly uses the comparative adjective taller to compare the height of the speaker's friend to the speaker's own height.
- Rachel tiptoed quietly. - This sentence describes how Rachel tiptoed, but doesn't compare it to anything else.
Therefore, the correct answer is option c, My friend is taller than I, as it correctly uses a comparative adjective to show a comparison between two things.