What does the cryptic crossword clue "ABC is primarily suitable, perhaps, for these? (6)" mean?

The definition is "ABC is primarily suitable, perhaps, for these?". The wordplay uses an anagram. anagram of ABC IS S = BASICS The answer is BASICS.

ABC is primarily suitable, perhaps, for these? (6)

Guardian Cryptic #29242 | 1 Across | 2023-12-01 flower