In the alleyways of old Cairo, in its cafes, warehouses and barbershops, framed portraits of Egyptian icons are ______________. Kings, presidents, religious and political figures are all ______________ on fading walls, held up as symbols of a glorious past.

For the first blank, we need an adjective that suggests the portraits of Egyptian icons are commonly found throughout old Cairo — something that conveys widespread presence. For the second blank, we need a verb that implies these figures are being honoured or preserved in memory, consistent with the nostalgic tone of the sentence.

Ubiquitous is the best choice for the first blank, as it means “to be present everywhere.” Immortalised is ideal for the second blank, as it conveys that these icons are being preserved and celebrated as lasting symbols of the past.

Hence, option B is the best choice.