Final answer:
Sets B and C, 'Sun, fun, run' and 'Flag, black, snack,' are good examples for blending routines as they have common patterns and sounds. Sets A and D are less cohesive and could be more confusing for blending exercises.
Step-by-step explanation:
When introducing blending routines to students, it is important to select words that have clear, phonetic components that can be easily blended together. Set B, Sun, fun, run, works well because these words share a common rhyming pattern and word family (-un), which can help students recognize similar sounds and patterns.
Similarly, Set C, Flag, black, snack, includes words that start with blends (fl-, bl-, sn-) which can help students learn to blend individual sounds within a word. However, Sets A and D might be less effective. Set A, Dog, cat, sit, while simple, does not have a cohesive sound or pattern to help with blending. Set D, Jump, lamp, map, could be confusing due to the similar appearances but different vowel sounds and ending sounds in the words.