FIA

The modal verb 'would' is appropriate here because it expresses a future action that was agreed upon by the parties. In the sentence 'They agreed that the election ------------- be held at an early date,' 'would' conveys the idea of a future event decided in the past. While 'should' can sometimes be used to express expectation or obligation, it is less suitable for indicating a future event agreed upon. 'Shall' is more formal and less common in this context, and 'could' implies possibility rather than certainty. Therefore, 'would' fits best to express the agreed future event.

The verb 'disappear' is commonly followed by the preposition 'from' to indicate the place or state from which something ceases to be visible or present. In the phrase 'The courageous man never disappears from success,' the preposition 'from' correctly conveys that the man does not vanish or fade away due to success. Other prepositions like 'about,' 'of,' or 'over' do not fit idiomatically in this context.

The mercury thermometer was invented by Daniel Gabriel Fahrenheit, not Gabriel Farhrenhiet. The correct answer is 'None of these' since the provided options are incorrect or misspelled.

The banker's discount (BD) is calculated using the formula BD = True Discount (TD) × (Face Value / (Face Value - TD)). Here, TD = 90 and Face Value = 540. So, BD = 90 × (540 / (540 - 90)) = 90 × (540 / 450) = 90 × 1.2 = 108. Hence, option B is correct.

The electric fan was invented by Schuyler Skaats Wheeler in 1882. He created a fan powered by electricity by placing a two-bladed propeller on the shaft of an electric motor. This invention was commercially marketed by the Crocker & Curtis electric motor company. The other options (William Thomas, Jules Verne, Elias Howe) are not associated with the invention of the electric fan. Therefore, the correct answer is B, Wheeler.

If A's income is 25% more than B's income, then A = 1.25 × B. To express B's income in terms of A's income, rearrange the equation: B = A ÷ 1.25 = 0.8 × A. This means B's income is 80% of A's income. Therefore, the correct answer is option B (80%).

The headquarters of the Organization of Islamic Cooperation (OIC) is located in Jeddah, Saudi Arabia. This is a well-established fact and the correct answer is option A.

James Harrison is credited with inventing the first practical mechanical refrigeration system in the 1850s, making him the inventor of the refrigerator. The other options are incorrect: John Bardeen (not Brattain) was a physicist known for the transistor, and Nikola Tesla was an inventor known for electrical engineering but not refrigeration.

The Organization of the Islamic Conference (OIC) was established in 1969 following a summit in Rabat, Morocco, making 1969 the correct year of its founding.

The General Secretariat of the European Parliament is located in Luxembourg. This is the administrative office that supports the Parliament's activities, and Luxembourg hosts one of the Parliament's official seats.