Which of the following is NOT discussed in the passage as a determining factor of the
amount of pollen in the air?
(A) Place
(B) Climate
(C) Time of year
(D) Altitude

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Hay fever is a seasonal allergy to pollens. The term “hay fever,” however, is a less than adequate description since such an attack can be brought on by sources other than hay-producing grasses and since an attack of this allergy does not incur fever.

The causes of hay fever can be quite varied. Hay fever is generally caused by air-borne pollens, particularly ragweed pollen. The amount of pollen in the air is largely dependent on geographical location, weather, and season. In the eastern section of the United States, for example, there are generally three periods when pollen from various sources can cause intense hay fever sufferings; in the springtime months of March and April, when pollen from trees is prevalent, in the summer months of June and July, when grass pollen fills the air, and at the end of August, when ragweed pollen is at its most concentrated levels.

What results from an attack of hay fever is not a fever. Instead, a person with hay fever will suffer symptoms such as red and itching eyes, a swollen and runny nose, and repeated bouts of sneezing.

Which of the following is NOT discussed in

the passage as a determining factor of the

amount of pollen in the air?

(A) Place

(B) Climate

(C) Time of year

(D) Altitude

(D) Altitude

Explanation:

The factors presented as determining the amount of pollen in the air are place (geographical location), climate (weather), and time of year (season). For example, in the east, pollen in the air becomes more frequent during spring (March and April) and summer (June, July, and the end of August). Altitude is not considered a factor.

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