In an outline, capital letters designate
a. main topics.
b. subtopics.
c. subdivisions.
d. classification.

The correct answer is B) subtopics.

In an outline, capital letters designate subtopics.

When writing, an outline helps to organize and structure the content of the document. Here, capital letters help to designate subtopics when changing from one topic to another. A subtopic is part of the main theme or topic in a paper or document. The subtopic could be the many elements include in a topic.  

sing because that is what they are doing in the sentence

explanation:

the simple predicate is the main verb in the predicate that tells what the subject does. example: my father fixed the dryer. read each sentence. draw a line under the complete predicate.

explanation:

abu dhabi commercial bank