The idiomatic expression ' to latch onto'

[Litki]

English Language Tests, Intermediate level

ESL/EFL Test #522 "English Slang Idioms (264)", question 4

"Wow, when you ......... onto an idea, you don't let go. You have been talking about making a garden behind the shed, non-stop, for the past two weeks," Laurie said to Nick.

(a) link
(b) leap
(c) let
(d) latch

English Language Tests, Intermediate level

ESL/EFL Test #522 "English Slang Idioms (264)", answer 4

"Wow, when you latch onto an idea, you don't let go. You have been talking about making a garden behind the shed, non-stop, for the past two weeks," Laurie said to Nick.

Correct answer: (d) latch
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which is the best answer in this sentence?

Litki

[Mister Micawber]

.
'Latch'. The idiomatic expression, ' to latch onto', means:

a. to take possession of; obtain; get.
b. to acquire understanding of; comprehend.
c. to attach oneself to; join in with.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber