Final answer:
Kelsey is likely struggling with the phonological task of identifying and manipulating blends in words.
Step-by-step explanation:
Kelsey is likely struggling with the phonological task of identifying and manipulating blends in words. A blend is a combination of two or more consonant sounds that are pronounced together without interruption, such as 'bl' in 'blend' or 'str' in 'street.' In options a), b), and d), Kelsey is being asked to say words with blends and then try to remove or change specific sounds, which requires the ability to recognize and manipulate blends. Option c) does not involve blends, so Kelsey would not likely struggle with that task.