I would say b. Time, d. Location, and f. Atmosphere.
OOOOOOOOOOOOOOOOKAYYY GIMME A SEC AND ILL BE DONE
Danger is a situation whereby a person is seriously at risk of getting hurt or killed. It is that particular time when the adrenaline speeds to the highest informing there is a very fearful situation.
Facing danger is a determination which can be accomplished when one sees the need to conquer and before this is done one has to decide to make a move in taking the risk to surmount that which posses a threat against him. Fear remains the poor chisel to carve out the future, and this has been a limiting factor while many are afraid of conquering. Boldly confronting your fear which invariable presents itself dangerous to you with utmost determination to destabilize it is a very vital move which must be make if danger or dangerous situations must be eliminated. Therefore determination, confrontation and attacking that which presents itself as your fear and a dangerous situation makes you a conqueror.
Let us dissect each sentence to tell which of these does not follow the rules for subject-verb agreement.
A.) The subject is 'each of the students' while the verb is 'is'. More particularly, the verb refers to 'each' which is singular. So, this is correct.
B.) The subject is 'student' while the verb is 'were'. The word 'were' is the paste tense of are which is used for a plural subject. But since student is singular, then the verb should have been 'was'. So, this is incorrect.
C.) The subject is 'my dog and my cat' which pertains to two nouns, thus it is plural. It agrees with its plural verb 'are'.
D.) The subject is 'Tom' while the verb is 'does'. Both are intended for singular use. So, this is correct.
Therefore, the answer to this is letter B.
