Which of the following assessment instruments should Mr. Panketh use to gather data from his first-grade students on syllable types, spelling skills, phoneme-grapheme correspondences, and long-vowel pattern types?
Group of answer choices

a. He should use a spelling inventory to gather this information on his students.
b. He should use a phonics diagnostic assessment to gather this information on his students.
c. He should use a phonics unit assessment on the concepts covered in the unit to gather information on his students.
d. He should use an oral language proficiency test to gather this information on his students.