Logic of a solution: *Nephrons are the structural and functional units of the kidneys. Damage to the nephrons can be caused by conditions such as diabetes and high blood pressure . Damage to the structural units of the kidneys can be caused by high blood pressure ..*
*(H)*
The original question: *Damage to the structural units of the kidneys can be caused by ..
Options:
- (A) harmful substances
- (B) an area swollen with pus
- (C) a lot of human deaths
- (D) Pesticides
- (E) Heavy rains
- (F) Leptospirosis
- (G) Veins and arteries.
- (H) high blood pressure*

Logic of a solution: *Insects may live in large colonies and have complex social behaviors. Honey Bee Honey bees are insects that live in a hive and make honey. Bees live in large colonies and have complex social behaviors.*
*(D)*
The original question: *What lives in large colonies?
Options:
- (A) koalas
- (B) swea
- (C) voles
- (D) bees
- (E) bats
- (F) Birds
- (G) cats
- (H) bears*

Logic of a solution: *Trees have woody stems covered with bark. Stems of plants include trunks and branches. Trees have woody trunks covered with bark.*
*(G)*
The original question:
*What part of a tree would be woody and covered in bark?
Options:
- (A) shrub beds
- (B) the leaves
- (C) the roots
- (D) cacti
- (E) a sapling
- (F) Chlorophyll
- (G) the trunk
- (H) four limbs*