Question

Einstein could not speak till the age of three transitive or
intransitive​

Answer 1

I think it is intransitive

Answer 2

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Sentence :- Einstein could not speak till the age of three

The sentence is intransitive.

★ Explanation:

We know that there are two ways in which the meaning of a sentence can be conveyed, referred to as Active Voice and Passive voice.

Active voice is the voice in which the sentence is primarily focused on the doer of the verb.

And passive voice is the voice in which the sentence is primarily focused on the "OBJECT" to which the action is happening.

What we understand from this is,

Active voice =>  Subject + Verb + Object.

Passive voice => Object + helping verb + past participle/V3 + [ by + subject ].

In the sentence,

Einstein could not speak till the age of three.

The subject is Einstein, but there's no object.

So, this sentence can't be turned into passive.

(!NOTE!: Object answers the question "to what"/"to whom")

Transitive sentences: the sentences which can be turned from active to passive or (vice-versa).

Intransitive sentences: the sentences which canNOT be turned from active to passive (or vice-versa).

hope i helped....!!