In a good paragraph, all the sentences refer to the main idea of the paragraph. So if the topic sentence refers to the main idea of the paragraph, the remaining should too (false).
Answer:
A. Someone surely forgot to lock the door yesterday.
B. They said that they decided to spend their holiday in Spain.
C. It is very hard to understand the instructions which are written in the manual.
The answers is
unimportant
unsupported
One of the two I say unsupporting but the context and the thesaurus doesn't really explain so i say go with either one.
Explanation:
The poster child for vegetable hatred, many a broccoli floret has been left on the plates of disgusted diners. Meanwhile others don’t understand how a mild-flavoured vegetable can create such strong feelingsThe bitter stuff in broccoli are compounds that some plants produce to deter garden pests. These compounds can also show up in toxic plants.