By form the underlined part in ‘Whether we are going for a picnic again is the question he’s always asking’ is a

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

derivational suffix

derivational infix

bound base

derivational suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

derivational suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

compound words cannot be separated by any segment of language

each component of compound words cannot perform a separate grammatical function

a component of a compound word cannot participate in a grammatical structure

simple

compound

simple

compound

joining two or more words together

joining two or more morphemes together

mixing two words into one

annexing prefixes to a base

adding suffixes to a base

adding affixes to a base

combining different parts of 2 words

picking up the initials of a series of words

cutting off the suffixes of a word