Identify the incorrectly punctuated sentence.

(1 point)
Responses

Reaching for the lightbulb, Greg fell off the stepladder.
Reaching for the lightbulb, Greg fell off the stepladder.

Thinking he might be hurt Robert ran in to help.
Thinking he might be hurt Robert ran in to help.

Changing a lightbulb is not difficult.
Changing a lightbulb is not difficult.

Holding the stepladder, Robert watched Greg try again.

Thinking he might be hurt Robert ran in to help.