The principal presented the chief guest with a memento as token of appreciation.

Frogs croak

Educe Meaning- uncovering or bringing forth something that is not immediately apparent

Most appropriate will be Extract

Option ( A ) is correct

Tuberculosis is singular hence option (B) & (D) is not possible. Option (C) is directly giving rank 1  for tuberculosis which is not true.

 Option ( B ) is correct is correct inference drawn from passage

6 5 4 

7 4 7 2 1 

1 9 2 8 1 2 1

4 1 5 2 3 

3 __ 3

Center digit of a row is half of the sum of all other elements of same row

Example first row

5= (6+4)/2

Hence for last row, center digit

= (3+3)/2 = 3

Missing value is 3

Total number of smaller cubes: 3 * 3 * 3 = 27 cubes.

Total number of faces of all smaller cubes: Each cube has 6 faces, so total faces = 27 * 6 = 162 faces.

Visible faces:

• There are 6 faces of the larger cube, each with 9 faces of  smaller cubes.

• So, there are 6 * 9 = 54 faces visible

Non-visible faces: Total faces - Visible faces = 162 - 54 = 108 faces.

Proportion of visible to non-visible faces:  54:108 ⇒ 1:2

(Option C) is the correct

1. Humpty Dumpty sits on a wall every day while having lunch.

2. The wall sometimes breaks.

3. A person sitting on the wall falls if the wall breaks.

Analysis:

• Statement (A) "Humpty Dumpty always falls while having lunch" is not necessarily true. The wall sometimes breaks, which implies that sometimes Humpty Dumpty falls

• Statement (B) "Humpty Dumpty does not fall sometimes while having lunch" is correct. As the wall sometimes does not break. 

• Statement (C) "Humpty Dumpty never falls during dinner" is incorrect as the wall sometimes breaks, it follows that Humpty Dumpty sometimes falls.

• Statement (D) "When Humpty Dumpty does not sit on the wall, the wall does not break" is the only logically valid statement that can be inferred from the given information.

Therefore, the correct answer is (B)