If train is called bus, bus is called tractor, tractor is called car, car is called scooter, scooter is called bicycle, bicycle is called moped, which is used to plough a field ?

D. CAR

Choose the correct alternative from the following : - Assertion (A) : In India, females have higher life expectancy than the  males.
Reason (R) : Females receive a better diet.

E. BOTH A AND R ARE FALSE.

In the following question, a matrix of certain characters is given. These characters follow a certain trend, row-wise or column-wise. Find out this trend and choose the missing character accordingly.
28 20 7
84 35 12
45 ? 9

D. 25

(i) There is a group of six persons A, B, C, D, E and F from a family. They are Psychologist, Manager, Lawyer, Jeweller, Doctor and Engineer.
(ii) The doctor is the grandfather of F who is a Psychologist.
(iii) The manager D is married to A.
(iv) C, the Jeweller is married to the Lawyer.
(v) B is the mother of F and E.
(vi) There are two married couples in the family. What is the profession of E ?

E. NONE OF THESE

In following number series, either one term is missing or is incorrect. - Choose correct answer from options 1, 5, 14, 30, 55, 93

C. 93