FIA

To find the sales tax, multiply the item cost by the tax rate: $2000 × 3% = $2000 × 0.03 = $60. Therefore, the correct tax amount is $60, which corresponds to option B.

SCO stands for Shanghai Cooperation Organisation, which is a political, economic, and security alliance in Eurasia. This is the correct and widely accepted full form of SCO.

Seismic waves generally increase in velocity when they enter the Earth's mantle due to the higher density and rigidity of mantle materials compared to the crust. This causes the waves to travel faster through the mantle.

The lungs are located in the thoracic cavity, which is the part of the body cavity enclosed by the ribs and diaphragm. The other options are incorrect or misspelled.

The BIOS is typically stored in an EEPROM (Electrically Erasable Programmable Read-Only Memory), which allows it to be updated or rewritten. Flash memory is a type of EEPROM, but the more precise and commonly accepted term for BIOS storage is EEPROM.

The Indus River flows into the Arabian Sea near the coastal town of Badin in Pakistan. Karachi is a major city nearby but the river's delta and mouth are closer to Badin.

The seasons change because the Earth revolves around the Sun, causing different parts of the Earth to receive varying amounts of sunlight throughout the year. This revolution, combined with the tilt of Earth's axis, results in seasonal changes.

MNA stands for 'Member of National Assembly,' which is a common term used in Pakistan to refer to elected members of the National Assembly, the lower house of the Parliament.

Antarctica covers approximately 2.75% of the Earth's total land area, making option A the correct choice. This percentage is widely accepted in geographical data.

Sri Lanka was formerly known as Ceylon during the period of British colonial rule until 1972 when it officially changed its name to Sri Lanka. The other options are unrelated to Sri Lanka's historical names.