Did you know spiders are arachnids and not insects

Identify the following group of words as an incomplete or complete sentence. if the sentence is incomplete, identify the reason. dinosaurs have disappeared a. complete sentence b. incomplete sentence: no subject c. incomplete sentence: subordinate clause d. incomplete sentence: no verb

When the subject of a sentence performs the action in the sentence the verb in the sentence is in the what ?

What is the central idea in this advice from branch rickey to jackie robinson?