The age at which the infant can see an object, grasp it, and bring it to the mouth is

Correct Answer: A

Rationale: This milestone is typically achieved around 4 months.

Correct Answer: D

Rationale: Hyper-resonance is typically seen in pneumothorax, not lobar pneumonia, which usually presents with dullness to percussion due to consolidation.

Correct Answer: C

Rationale: Immunotherapy is not effective for anaphylaxis to a wasp sting, as it is an acute, life-threatening reaction requiring immediate epinephrine.

Correct Answer: C

Rationale: When introducing solid foods to an infant for the first time, rice cereal is generally recommended as it is mild, easy to digest, and less likely to cause food allergies compared to other foods. It is a good source of iron and a suitable first food for most infants. Introducing rice cereal as the first solid food also helps the baby get accustomed to a different texture and aids in their transition from a milk-only diet to solid foods. It is important to follow the guidance of healthcare professionals regarding the introduction of solid foods to infants to ensure they receive appropriate nutrition and avoid any potential digestive issues.

Correct Answer: C

Rationale: Severe pain, often in the big toe, is the hallmark symptom of gout due to uric acid crystal deposition.