Answer: Take your time reading the instructions, if you are writing an essay read it to a relative and ask them if it is good. Check your grammar. etc
A clause has a subject and a verb, so
1) "parade" "began"
2) "she" "loves"
3) "she" "went"
4)
5) "today" "rained"
so by this logic 4 wouldn't be a clause because it has no identifiable subject or verb
The correct answer is B. Incidentally.
Explanation
Linking Words are words that are used to relate ideas within a paragraph. To select the appropriate linking word it is necessary to know the context of the sentence to give cohesion and coherence to the text. In the sentence presented, the appropriate linking word is "incidentally" because the idea "wearing certain colors may also attract mosquitoes" acts as a complementary information and the linking word "incidentally" can be used to add ideas. So, the correct answer is B.