Drones do not have a __(i)__ and thus cannot have __(ii)__, but have a __(iii)__ and can have __(iv)__.
The correct words for (i), (ii), (iii) and (iv) respectively are:

Question 22
Which of the following statements are true for eukaryotic cells?

(i) They do not have a nuclear membrane.
(ii) They have a well organised nucleus.
(iii) They have a nuclear membrane.
(iv) Blue green algae are eukaryotic cells.

(a) ii and iv
(b) ii and iii
(c) i and ii
(d) i and iv

Which of the following statements are true for pure substances? ​

(i) Pure substances can be a compound or a mixture.​

(ii) Pure substances have the same composition throughout the sample.​

(iii) Pure substances can be either an element or a compound.​

(iv) Pure substances have constant properties throughout the sample.

(A) i and iii
(B) i, ii, and iv
(C) ii, iii, and iv

Digital signals

(i) Do not provide a continuous set of values,

(ii) Represent values as discrete steps,

(iii) Can utilize binary system, and

(iv) Can utilize decimal as well as binary systems.

Which of the above statements are true?

(a) (i) and (ii) only

(b) (ii) and (iii) only

(c) (i), (ii) and (iii) but not (iv)

(d) All of (i), (ii), (iii) and (iv).