Vitamin B12 is primarily found in animal products and is crucial for nerve function and the production of DNA and red blood cells.

Vitamin B12 is primarily found in animal products and is essential for the formation of red blood cells and DNA synthesis.

Vitamin B12 is primarily found in animal products and is crucial for nerve function and the production of DNA and red blood cells.

Vitamin D plays a crucial role in calcium absorption in the gut and maintaining adequate serum calcium and phosphate levels.

Vitamin A is essential for the formation of rhodopsin, a pigment in the retina that is crucial for vision.

Vitamin C is abundant in citrus fruits like oranges, lemons, and grapefruits.

Vitamin D is synthesized in the skin upon exposure to sunlight.

Vitamin D is produced in the skin when it is exposed to sunlight.

Vitamin D is synthesized in the skin when it is exposed to ultraviolet (UV) rays from sunlight.

Green light is least effective for photosynthesis because it is mostly reflected by chlorophyll.

Blue light is most effective for photosynthesis as it is absorbed strongly by chlorophyll.

The Pradhan Mantri Awas Yojana, launched in 2015, aims to provide affordable housing to the urban poor.

The Skill India Mission, launched in 2015, aims to provide skill training to the youth to enhance their employability.

The author expresses frustration with current environmental policies, indicating a critical tone.

'Therefore' indicates a cause-and-effect relationship.

'Therefore' indicates that his preparation was a result of his studying.

The author views education as critical for raising awareness and fostering informed action on climate change.

In the context of the passage, 'mitigate' means to reduce the severity of an issue, making 'reduce' the closest synonym.

'Happiness' is a noun, while the others are not.

'Under' is the preposition in the sentence.

'Under' is the preposition that shows the relationship between the cat and the table.

'Benevolent' refers to being kind and well-meaning. Hence, the synonym is 'kind'.

'Hasty' means done with excessive speed; quick.

'Meticulous' means showing great attention to detail, which is synonymous with 'thorough'.

'Vivid' means producing powerful feelings or strong, clear images in the mind, which is synonymous with 'bright'.

'Elated' means very happy or proud; therefore, the synonym is 'joyful'.

'Meticulous' means showing great attention to detail, making 'thorough' the correct synonym.

'Descend' means to go down, which is the opposite of 'ascend'.

'Contract' means to become smaller, which is the opposite of 'expand'.

'Rare' is the antonym of 'frequent', indicating something that does not happen often.