Question

Is what's below a complete sentence or a fragment?

Especially when Jesus Foster almost dropped the birthday cake when all the candles were lit.

Answer 1

a fragment

Step-by-step explanation:

In the same way that my answer above is a fragment, the given sentence is a dependent clause, and as such, it cannot stand on its own; something must either be added to it or deleted from it.

fragment: a fragment

complete sentences:

It's a fragment.

A fragment is a only a piece of a complete sentence.

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fragment: Especially when Jesus Foster almost dropped the birthday cake when all the candles were lit.

complete sentences:

Jesus Foster almost dropped the birthday cake when all the candles were lit.

I laughed a lot at the party, especially when Jesus Foster almost dropped the birthday cake when all the candles were lit.

Answer 2

It is a fragment.

Although it has a subject and predicate, it is a subordinate clause as it starts with 'especially', indicating an adjective or adverb clause.