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jerrywu
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GMATT73
duttsit
A.

Researchers have announced
- that the magnetic fields ....... can interfere with pacemakers
- and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

Note the critical elements in this sentence:

Researchers have announced that the magnetic fields emitted by one manufacturer’s security surveillance system, of which type there are 200,000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

Great SC Jerry! Keep posting from this source, please.



HI MATE

Will (D) be correct if it is written:

200,000 of which type exist worldwide, interfering with pacemakers, and that
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GMATT73
duttsit
A.

Researchers have announced
- that the magnetic fields ....... can interfere with pacemakers
- and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

Note the critical elements in this sentence:

Researchers have announced that the magnetic fields emitted by one manufacturer’s security surveillance system, of which type there are 200,000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

Great SC Jerry! Keep posting from this source, please.


HI MATE

Will (D) be correct if it is written:

200,000 of which type exist worldwide, interfering with pacemakers, and that


Unfortunately it would still be incorrect because "they" would not have a clear antecedent (the researchers or the magnetic fields).



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