Which choice shows the proper way to use a colon?
-warning: if taken internally, consult a physician immediately.
-warnings are written: on the following labels medicines, cleaning products, and some foods.
-there is: one thing you should always read a warning label.
my doctor said, “read the label.”

-Warning: If taken internally, consult a physician immediately.

Explanation:

A colon is a grammatical punctuation mark used in sentences for the separation between an independent clause and the dependent clause. But more importantly, they are used to separate such clauses when the second clause is used to explain the first clause.

Among the given examples, the correct usage of the colon is in the first sentence.

Warning: If taken internally, consult a physician immediately.

While the other sentences are normal, regular sentences The use of this mark in the other two sentences, especially the placing of it in a free flowing sentence is wrong. As for the first option, the colon just after "warning" emphasizes the importance of the given information. Also, the next sentence after the colon mark gives an explanation of why the first part of the sentence is used.

gurl whut are you saying lol

answer: the sentence in the text that contains both the topic and the author's single most important idea about the topic

explanation: aww pineapple so adorable