What was the primary cause of the london fog of 1952?
a. global warming trapped hot air from blast furnaces in the lower regions of the atmosphere.
b. cold air led to heavy use of coal, and the smoke from the coal fires was trapped close to the ground by a temperature inversion.
c. effluents from steel factories raised the temperature of the thames river, producing increased water vapor that condensed as soon as it contacted the air.
d. unusually strong winds pushed air up the slopes of

Anagnos: . . it will no doubt be difficult for you there, annie. but it has been difficult for you at our school too, hm? gratifying, yes, when you came to us and could not spell your name, to accomplish so much here in a few years, but always an irish battle. for independence. (he studies annie, humorously; she does not open her eyes.) this is my last time to counsel you, annie, and you do lack some – by some i mean all – what, tact or talent to bend. to others. and what had saved you on more than one occasion here at perkins is that there was nowhere to expel you to. what do anagnos's words reveal about annie in this excerpt