Final answer:
The linking verb in the sentence is 'looked,' and it is followed by the noun phrase 'the part of goodly Osborne and author Miller's decruciable' as the subject complement.
Step-by-step explanation:
In the sentence provided, the linking verb is ‘looked.’ Linking verbs typically connect the subject of the sentence to a subject complement, which is a noun phrase or an adjective that describes or identifies the subject. In this case, the subject complement is the noun phrase ‘the part of goodly Osborne and author Miller's decruciable.’
This means the elderly actress not only looked good for the role but seemed to embody it completely, as indicated by the noun phrase used as the subject complement.