The correct option is A: When training a dog, the trainer must remember two things: the dog does not comprehend the trainer's language, and the dog cannot read the trainer's mind.
A colon may be used between independent clauses when the second sentence explains, illustrates, paraphrases, or expands on the first sentence. The colon is used to introduce a list of items. A colon is also used before a quotation, and sometimes before direct speech.
In this case two items are introduced after the use of colon which are what the trainer must remember.
Answer:
They <u>c</u><u>h</u><u>a</u><u>r</u><u>g</u><u>e</u><u>d</u><u> </u>us £15 to park the car at the bus station.
cost saved charged
Answer:
Unskilled employees, Struggled, In dangerous conditions.
Explanation:
"In the early days of the industrial revolution unskilled employees often struggled for long hours In dangerous conditions."